diff --git a/ChangeLog b/ChangeLog
index c4c422dec4..f57b439c73 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -2,7 +2,6 @@ phpMyAdmin - ChangeLog
 ======================
 
 4.7.9 (not yet released)
-- issue #13940 Honor arg_separator in AJAX requests
 - issue #13931 Fixed browsing tables with more results
 - issue #13927 "Not an integer" when browsing a table
 - issue #13887 "Input variables exceeded 1000" error relating to PHP's max_input_vars directive
diff --git a/js/ajax.js b/js/ajax.js
index 95dc70be59..ab62c27a9a 100644
--- a/js/ajax.js
+++ b/js/ajax.js
@@ -280,13 +280,12 @@ var AJAX = {
         $('html, body').animate({scrollTop: 0}, 'fast');
 
         var url = isLink ? href : $(this).attr('action');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var params = 'ajax_request=true' + argsep + 'ajax_page_request=true';
+        var params = 'ajax_request=true&ajax_page_request=true';
         var dataPost = AJAX.source.getPostData();
         if (! isLink) {
-            params += argsep + $(this).serialize();
+            params += '&' + $(this).serialize();
         } else if (dataPost) {
-            params += argsep + dataPost;
+            params += '&' + dataPost;
             isLink = false;
         }
         if (! (history && history.pushState)) {
@@ -761,7 +760,7 @@ $(function () {
             var state = event.originalEvent.state;
             if (state && state.menu) {
                 AJAX.$msgbox = PMA_ajaxShowMessage();
-                var params = 'ajax_request=true' + PMA_commonParams.get('arg_separator') + 'ajax_page_request=true';
+                var params = 'ajax_request=true&ajax_page_request=true';
                 var url = state.url || location.href;
                 $.get(url, params, AJAX.responseHandler);
                 //TODO: Check if sometimes menu is not retrieved from server,
diff --git a/js/common.js b/js/common.js
index d5e5c43217..7bb4aadca8 100644
--- a/js/common.js
+++ b/js/common.js
@@ -86,12 +86,11 @@ var PMA_commonParams = (function () {
         getUrlQuery: function () {
             var common = this.get('common_query');
             var separator = '?';
-            var argsep = PMA_commonParams.get('arg_separator');
             if (common.length > 0) {
-                separator = argsep;
+                separator = '&';
             }
             return PMA_sprintf(
-                '%s%sserver=%s' + argsep + 'db=%s' + argsep + 'table=%s',
+                '%s%sserver=%s&db=%s&table=%s',
                 this.get('common_query'),
                 separator,
                 encodeURIComponent(this.get('server')),
diff --git a/js/db_central_columns.js b/js/db_central_columns.js
index e17682fae9..d3ed14b752 100644
--- a/js/db_central_columns.js
+++ b/js/db_central_columns.js
@@ -64,8 +64,7 @@ AJAX.registerOnload('db_central_columns.js', function () {
             PMA_ajaxShowMessage(PMA_messages.strRadioUnchecked);
             return false;
         }
-        var argsep = PMA_commonParams.get('arg_separator');
-        var editColumnData = editColumnList+ argsep + 'edit_central_columns_page=true' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'token='+PMA_commonParams.get('token') + argsep + 'db='+PMA_commonParams.get('db');
+        var editColumnData = editColumnList+ '&edit_central_columns_page=true&ajax_request=true&ajax_page_request=true&token='+PMA_commonParams.get('token')+'&db='+PMA_commonParams.get('db');
         PMA_ajaxShowMessage();
         AJAX.source = $(this);
         $.get('db_central_columns.php', editColumnData, AJAX.responseHandler);
@@ -73,8 +72,7 @@ AJAX.registerOnload('db_central_columns.js', function () {
     $('#multi_edit_central_columns').submit(function(event){
         event.preventDefault();
         event.stopPropagation();
-        var argsep = PMA_commonParams.get('arg_separator');
-        var multi_column_edit_data = $("#multi_edit_central_columns").serialize()+argsep+'multi_edit_central_column_save=true'+argsep+'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'token='+PMA_commonParams.get('token')+argsep+'db='+PMA_commonParams.get('db');
+        var multi_column_edit_data = $("#multi_edit_central_columns").serialize()+'&multi_edit_central_column_save=true&ajax_request=true&ajax_page_request=true&token='+PMA_commonParams.get('token')+'&db='+PMA_commonParams.get('db');
         PMA_ajaxShowMessage();
         AJAX.source = $(this);
         $.post('db_central_columns.php', multi_column_edit_data, AJAX.responseHandler);
@@ -154,7 +152,7 @@ AJAX.registerOnload('db_central_columns.js', function () {
         $.ajax({
             type: "POST",
             url: "db_central_columns.php",
-            data: datastring+PMA_commonParams.get('arg_separator')+'ajax_request=true',
+            data: datastring+'&ajax_request=true',
             dataType: "json",
             success: function(data) {
                 if (data.message !== '1') {
diff --git a/js/db_operations.js b/js/db_operations.js
index fcee734237..a55b1e4e81 100644
--- a/js/db_operations.js
+++ b/js/db_operations.js
@@ -53,7 +53,7 @@ AJAX.registerOnload('db_operations.js', function () {
 
         $form.PMA_confirm(question, $form.attr('action'), function (url) {
             PMA_ajaxShowMessage(PMA_messages.strRenamingDatabases, false);
-            $.post(url, $("#rename_db_form").serialize() + PMA_commonParams.get('arg_separator') + 'is_js_confirmed=1', function (data) {
+            $.post(url, $("#rename_db_form").serialize() + '&is_js_confirmed=1', function (data) {
                 if (typeof data !== 'undefined' && data.success === true) {
                     PMA_ajaxShowMessage(data.message);
                     PMA_commonParams.set('db', data.newname);
@@ -113,7 +113,7 @@ AJAX.registerOnload('db_operations.js', function () {
         var $form = $(this);
         PMA_prepareForAjaxRequest($form);
         PMA_ajaxShowMessage(PMA_messages.strChangingCharset);
-        $.post($form.attr('action'), $form.serialize() + PMA_commonParams.get('arg_separator') + "submitcollation=1", function (data) {
+        $.post($form.attr('action'), $form.serialize() + "&submitcollation=1", function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 PMA_ajaxShowMessage(data.message);
             } else {
diff --git a/js/db_search.js b/js/db_search.js
index 17f4949fb1..e38534ae8e 100644
--- a/js/db_search.js
+++ b/js/db_search.js
@@ -212,7 +212,7 @@ AJAX.registerOnload('db_search.js', function () {
 
         PMA_prepareForAjaxRequest($form);
 
-        var url = $form.serialize() + PMA_commonParams.get('arg_separator') + "submit_search=" + $("#buttonGo").val();
+        var url = $form.serialize() + "&submit_search=" + $("#buttonGo").val();
         $.post($form.attr('action'), url, function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 // found results
diff --git a/js/db_tracking.js b/js/db_tracking.js
index 5cbc34672e..5b771d2c75 100644
--- a/js/db_tracking.js
+++ b/js/db_tracking.js
@@ -44,8 +44,7 @@ AJAX.registerOnload('db_tracking.js', function () {
         e.preventDefault();
         var $button = $(this);
         var $form = $button.parent('form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'submit_mult=' + $button.val();
+        var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true&submit_mult=' + $button.val();
 
         if ($button.val() == 'delete_tracking') {
             var question = PMA_messages.strDeleteTrackingDataMultiple;
@@ -68,8 +67,7 @@ AJAX.registerOnload('db_tracking.js', function () {
         e.preventDefault();
         var $button = $(this);
         var $form = $button.parent('form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'submit_mult=' + $button.val();
+        var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true&submit_mult=' + $button.val();
         PMA_ajaxShowMessage();
         AJAX.source = $form;
         $.post($form.attr('action'), submitData, AJAX.responseHandler);
@@ -93,4 +91,4 @@ AJAX.registerOnload('db_tracking.js', function () {
             $.post(url, params, AJAX.responseHandler);
         });
     });
-});
+});
\ No newline at end of file
diff --git a/js/functions.js b/js/functions.js
index 5c1e640a19..07dd31d54f 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -218,7 +218,7 @@ function PMA_handleRedirectAndReload(data) {
         if (window.location.href.indexOf('?') === -1) {
             window.location.href += '?session_expired=1';
         } else {
-            window.location.href += PMA_commonParams.get('arg_separator') + 'session_expired=1';
+            window.location.href += '&session_expired=1';
         }
         window.location.reload();
     } else if (parseInt(data.reload_flag) == 1) {
@@ -663,7 +663,7 @@ function confirmLink(theLink, theSqlQuery)
     var is_confirmed = confirm(PMA_sprintf(PMA_messages.strDoYouReally, theSqlQuery));
     if (is_confirmed) {
         if (typeof(theLink.href) !== 'undefined') {
-            theLink.href += PMA_commonParams.get('arg_separator') + 'is_js_confirmed=1';
+            theLink.href += '&is_js_confirmed=1';
         } else if (typeof(theLink.form) != 'undefined') {
             theLink.form.action += '?is_js_confirmed=1';
         }
@@ -1844,17 +1844,16 @@ function loadForeignKeyCheckbox() {
 
 function getJSConfirmCommonParam (elem, params) {
     var $elem = $(elem);
-    var sep = PMA_commonParams.get('arg_separator');
     if (params) {
         // Strip possible leading ?
         if (params.startsWith('?')) {
             params = params.substr(1);
         }
-        params += sep;
+        params += '&';
     } else {
         params = '';
     }
-    params += 'is_js_confirmed=1' + sep + 'ajax_request=true' + sep 'fk_checks' + ($elem.find('#fk_checks').is(':checked') ? 1 : 0);
+    params += 'is_js_confirmed=1&ajax_request=true&fk_checks' + ($elem.find('#fk_checks').is(':checked') ? 1 : 0);
     return params;
 }
 
@@ -2409,11 +2408,10 @@ function PMA_ajaxRemoveMessage($this_msgbox)
 function PMA_previewSQL($form)
 {
     var form_url = $form.attr('action');
-    var sep = PMA_commonParams.get('arg_separator');
     var form_data = $form.serialize() +
-        sep + 'do_save_data=1' +
-        sep + 'preview_sql=1' +
-        sep + 'ajax_request=1';
+        '&do_save_data=1' +
+        '&preview_sql=1' +
+        '&ajax_request=1';
     var $msgbox = PMA_ajaxShowMessage();
     $.ajax({
         type: 'POST',
@@ -2465,7 +2463,7 @@ function PMA_checkReservedWordColumns($form) {
     $.ajax({
         type: 'POST',
         url: "tbl_structure.php",
-        data: $form.serialize() + PMA_commonParams.get('arg_separator') + 'reserved_word_check=1',
+        data: $form.serialize() + '&reserved_word_check=1',
         success: function (data) {
             if (typeof data.success != 'undefined' && data.success === true) {
                 is_confirmed = confirm(data.message);
@@ -2899,7 +2897,7 @@ AJAX.registerOnload('functions.js', function () {
             if (PMA_checkReservedWordColumns($form)) {
                 PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
                 //User wants to submit the form
-                $.post($form.attr('action'), $form.serialize() + PMA_commonParams.get('arg_separator') + "do_save_data=1", function (data) {
+                $.post($form.attr('action'), $form.serialize() + "&do_save_data=1", function (data) {
                     if (typeof data !== 'undefined' && data.success === true) {
                         $('#properties_message')
                          .removeClass('error')
@@ -2958,14 +2956,13 @@ AJAX.registerOnload('functions.js', function () {
                         //Refresh navigation as a new table has been added
                         PMA_reloadNavigation();
                         // Redirect to table structure page on creation of new table
-                        var sep = PMA_commonParams.get('arg_separator');
-                        var params_12 = 'ajax_request=true' + sep + 'ajax_page_request=true';
+                        var params_12 = 'ajax_request=true&ajax_page_request=true';
                         if (! (history && history.pushState)) {
                             params_12 += PMA_MicroHistory.menus.getRequestParam();
                         }
                         tblStruct_url = 'tbl_structure.php?server=' + data._params.server +
-                            sep + 'db='+ data._params.db + sep + 'token=' + data._params.token +
-                            sep + 'goto=db_structure.php' + sep 'table=' + data._params.table + '';
+                            '&db='+ data._params.db + '&token=' + data._params.token +
+                            '&goto=db_structure.php&table=' + data._params.table + '';
                         $.get(tblStruct_url, params_12, AJAX.responseHandler);
                     } else {
                         PMA_ajaxShowMessage(
@@ -3208,7 +3205,7 @@ AJAX.registerOnload('functions.js', function () {
             var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
             $the_form.append('<input type="hidden" name="ajax_request" value="true" />');
 
-            $.post($the_form.attr('action'), $the_form.serialize() + PMA_commonParams.get('arg_separator') + 'change_pw=' + this_value, function (data) {
+            $.post($the_form.attr('action'), $the_form.serialize() + '&change_pw=' + this_value, function (data) {
                 if (typeof data === 'undefined' || data.success !== true) {
                     PMA_ajaxShowMessage(data.error, false);
                     return;
@@ -3816,7 +3813,7 @@ function indexEditorDialog(url, title, callback_success, callback_failure)
         var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
         PMA_prepareForAjaxRequest($form);
         //User wants to submit the form
-        $.post($form.attr('action'), $form.serialize() + PMA_commonParams.get('arg_separator') + "do_save_data=1", function (data) {
+        $.post($form.attr('action'), $form.serialize() + "&do_save_data=1", function (data) {
             var $sqlqueryresults = $(".sqlqueryresults");
             if ($sqlqueryresults.length !== 0) {
                 $sqlqueryresults.remove();
@@ -4629,8 +4626,7 @@ function PMA_createViewDialog($this)
 {
     var $msg = PMA_ajaxShowMessage();
     var syntaxHighlighter = null;
-    var sep = PMA_commonParams.get('arg_separator');
-    $.get($this.attr('href') + sep + 'ajax_request=1' + sep 'ajax_dialog=1', function (data) {
+    $.get($this.attr('href') + '&ajax_request=1&ajax_dialog=1', function (data) {
         if (typeof data !== 'undefined' && data.success === true) {
             PMA_ajaxRemoveMessage($msg);
             var buttonOptions = {};
diff --git a/js/gis_data_editor.js b/js/gis_data_editor.js
index 2bafbcd874..5591e124ce 100644
--- a/js/gis_data_editor.js
+++ b/js/gis_data_editor.js
@@ -199,8 +199,7 @@ function insertDataAndClose() {
     var $form = $('form#gis_data_editor_form');
     var input_name = $form.find("input[name='input_name']").val();
 
-    var argsep = PMA_commonParams.get('arg_separator');
-    $.post('gis_data_editor.php', $form.serialize() + argsep + "generate=true" + argsep + "ajax_request=true", function (data) {
+    $.post('gis_data_editor.php', $form.serialize() + "&generate=true&ajax_request=true", function (data) {
         if (typeof data !== 'undefined' && data.success === true) {
             $("input[name='" + input_name + "']").val(data.result);
         } else {
@@ -247,8 +246,7 @@ AJAX.registerOnload('gis_data_editor.js', function () {
      */
     $(document).on('change', "#gis_editor input[type='text']", function () {
         var $form = $('form#gis_data_editor_form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post('gis_data_editor.php', $form.serialize() + argsep + "generate=true" + argsep + "ajax_request=true", function (data) {
+        $.post('gis_data_editor.php', $form.serialize() + "&generate=true&ajax_request=true", function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 $('#gis_data_textarea').val(data.result);
                 $('#placeholder').empty().removeClass('hasSVG').html(data.visualization);
@@ -269,8 +267,7 @@ AJAX.registerOnload('gis_data_editor.js', function () {
         var $gis_editor = $("#gis_editor");
         var $form = $('form#gis_data_editor_form');
 
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post('gis_data_editor.php', $form.serialize() + argsep + "get_gis_editor=true" + argsep + "ajax_request=true", function (data) {
+        $.post('gis_data_editor.php', $form.serialize() + "&get_gis_editor=true&ajax_request=true", function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 $gis_editor.html(data.gis_editor);
                 initGISEditorVisualization();
diff --git a/js/indexes.js b/js/indexes.js
index 3a555f48d5..0bb91f7835 100644
--- a/js/indexes.js
+++ b/js/indexes.js
@@ -566,8 +566,7 @@ AJAX.registerOnload('indexes.js', function () {
     $(document).on('click', '#save_index_frm', function (event) {
         event.preventDefault();
         var $form = $("#index_frm");
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'do_save_data=1' + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true';
+        var submitData = $form.serialize() + '&do_save_data=1&ajax_request=true&ajax_page_request=true';
         var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
         AJAX.source = $form;
         $.post($form.attr('action'), submitData, AJAX.responseHandler);
@@ -678,7 +677,7 @@ AJAX.registerOnload('indexes.js', function () {
             }
             title = PMA_messages.strEditIndex;
         }
-        url += PMA_commonParams.get('arg_separator') + "ajax_request=true";
+        url += "&ajax_request=true";
         indexEditorDialog(url, title, function () {
             // refresh the page using ajax
             PMA_commonActions.refreshMain(false, function () {
diff --git a/js/microhistory.js b/js/microhistory.js
index ec2c894f0f..5091b884b5 100644
--- a/js/microhistory.js
+++ b/js/microhistory.js
@@ -199,7 +199,7 @@ PMA_MicroHistory = {
             }
             var menuHashesParam = menuHashes.join('-');
             if (menuHashesParam) {
-                param = PMA_commonParams.get('arg_separator') + 'menuHashes=' + menuHashesParam;
+                param = '&menuHashes=' + menuHashesParam;
             }
             return param;
         },
diff --git a/js/multi_column_sort.js b/js/multi_column_sort.js
index e04b3d2b39..c4946a9ba2 100644
--- a/js/multi_column_sort.js
+++ b/js/multi_column_sort.js
@@ -30,7 +30,7 @@ function removeColumnFromMultiSort(target, parent)
 {
     var URL = captureURL(target);
     var begin = target.indexOf('ORDER+BY') + 8;
-    var end = target.indexOf(PMA_commonParams.get('arg_separator') + 'session_max_rows');
+    var end = target.indexOf('&session_max_rows');
     // get the names of the columns involved
     var between_part = target.substr(begin, end-begin);
     var columns = between_part.split('%2C+');
@@ -49,7 +49,7 @@ function removeColumnFromMultiSort(target, parent)
         URL.head = head;
         // removing the last sort order should have priority over what
         // is remembered via the RememberSorting directive
-        URL.tail += PMA_commonParams.get('arg_separator') + 'discard_remembered_sort=1';
+        URL.tail += '&discard_remembered_sort=1';
     }
     var middle_part = columns.join('%2C+');
     url = URL.head + middle_part + URL.tail;
diff --git a/js/navigation.js b/js/navigation.js
index 3b1aabaa29..a16605d4f0 100644
--- a/js/navigation.js
+++ b/js/navigation.js
@@ -189,7 +189,7 @@ function loadChildNodes(isNode, $expandElem, callback) {
             if (window.location.href.indexOf('?') === -1) {
                 window.location.href += '?session_expired=1';
             } else {
-                window.location.href += PMA_commonParams.get('arg_separator') + 'session_expired=1';
+                window.location.href += '&session_expired=1';
             }
             window.location.reload();
         } else {
@@ -496,7 +496,7 @@ $(function () {
         event.preventDefault();
         var url = $(this).attr('href').substr(
             $(this).attr('href').indexOf('?') + 1
-        ) + PMA_commonParams.get('arg_separator') + 'ajax_request=true';
+        ) + '&ajax_request=true';
         var title = PMA_messages.strAddIndex;
         indexEditorDialog(url, title);
     });
@@ -506,7 +506,7 @@ $(function () {
         event.preventDefault();
         var url = $(this).attr('href').substr(
             $(this).attr('href').indexOf('?') + 1
-        ) + PMA_commonParams.get('arg_separator') + 'ajax_request=true';
+        ) + '&ajax_request=true';
         var title = PMA_messages.strEditIndex;
         indexEditorDialog(url, title);
     });
@@ -526,7 +526,7 @@ $(function () {
                 server: PMA_commonParams.get('server'),
                 token: PMA_commonParams.get('token')
             },
-            url: $(this).attr('href') + PMA_commonParams.get('arg_separator') + 'ajax_request=true',
+            url: $(this).attr('href') + '&ajax_request=true',
             success: function (data) {
                 if (typeof data !== 'undefined' && data.success === true) {
                     PMA_reloadNavigation();
@@ -541,7 +541,7 @@ $(function () {
     $(document).on('click', 'a.showUnhide.ajax', function (event) {
         event.preventDefault();
         var $msg = PMA_ajaxShowMessage();
-        $.get($(this).attr('href') + PMA_commonParams.get('arg_separator') + 'ajax_request=1', function (data) {
+        $.get($(this).attr('href') + '&ajax_request=1', function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 PMA_ajaxRemoveMessage($msg);
                 var buttonOptions = {};
@@ -578,7 +578,7 @@ $(function () {
                 server: PMA_commonParams.get('server'),
                 token: PMA_commonParams.get('token')
             },
-            url: $(this).attr('href') + PMA_commonParams.get('arg_separator') + 'ajax_request=true',
+            url: $(this).attr('href') + '&ajax_request=true',
             success: function (data) {
                 PMA_ajaxRemoveMessage($msg);
                 if (typeof data !== 'undefined' && data.success === true) {
@@ -1042,21 +1042,21 @@ function PMA_navigationTreePagination($this) {
     var url, params;
     if ($this[0].tagName == 'A') {
         url = $this.attr('href');
-        params = 'ajax_request=true' + PMA_commonParams.get('arg_separator') + 'token=' + PMA_commonParams.get('token');
+        params = 'ajax_request=true&token=' + PMA_commonParams.get('token');
     } else { // tagName == 'SELECT'
         url = 'navigation.php';
-        params = $this.closest("form").serialize() + PMA_commonParams.get('arg_separator') + 'ajax_request=true';
+        params = $this.closest("form").serialize() + '&ajax_request=true';
     }
     var searchClause = PMA_fastFilter.getSearchClause();
     if (searchClause) {
-        params += PMA_commonParams.get('arg_separator') + 'searchClause=' + encodeURIComponent(searchClause);
+        params += '&searchClause=' + encodeURIComponent(searchClause);
     }
     if (isDbSelector) {
-        params += PMA_commonParams.get('arg_separator') + 'full=true';
+        params += '&full=true';
     } else {
         var searchClause2 = PMA_fastFilter.getSearchClause2($this);
         if (searchClause2) {
-            params += PMA_commonParams.get('arg_separator') + 'searchClause2=' + encodeURIComponent(searchClause2);
+            params += '&searchClause2=' + encodeURIComponent(searchClause2);
         }
     }
     $.post(url, params, function (data) {
@@ -1548,7 +1548,7 @@ PMA_fastFilter.filter.prototype.request = function () {
     if (self.$this.find('> ul > li > form.fast_filter:first input[name=searchClause]').length === 0) {
         var $input = $('#pma_navigation_tree').find('li.fast_filter.db_fast_filter input.searchClause');
         if ($input.length && $input.val() != $input[0].defaultValue) {
-            params += PMA_commonParams.get('arg_separator') + 'searchClause=' + encodeURIComponent($input.val());
+            params += '&searchClause=' + encodeURIComponent($input.val());
         }
     }
     self.xhr = $.ajax({
diff --git a/js/normalization.js b/js/normalization.js
index caa7f11906..f9484c6dbc 100644
--- a/js/normalization.js
+++ b/js/normalization.js
@@ -522,9 +522,8 @@ AJAX.registerOnload('normalization.js', function() {
             $("#newCols #field_0_1").focus();
             return false;
         }
-        var argsep = PMA_commonParams.get('arg_separator');
         datastring = $('#newCols :input').serialize();
-        datastring += argsep + "ajax_request=1" + argsep + "do_save_data=1" + argsep + "field_where=last";
+        datastring += "&ajax_request=1&do_save_data=1&field_where=last";
         $.post("tbl_addfield.php", datastring, function(data) {
             if (data.success) {
                 $.post(
@@ -583,8 +582,7 @@ AJAX.registerOnload('normalization.js', function() {
     });
     $(".tblFooters").on("click", "#saveNewPrimary", function() {
         var datastring = $('#newCols :input').serialize();
-        var argsep = PMA_commonParams.get('arg_separator');
-        datastring += argsep + "field_key[0]=primary_0" + argsep + "ajax_request=1" + argsep + "do_save_data=1" + argsep + "field_where=last";
+        datastring += "&field_key[0]=primary_0&ajax_request=1&do_save_data=1&field_where=last";
         $.post("tbl_addfield.php", datastring, function(data) {
             if (data.success === true) {
                 $("#mainContent h4").html(PMA_messages.strPrimaryKeyAdded);
diff --git a/js/pmd/move.js b/js/pmd/move.js
index 32c10f92f6..e8bcc85c88 100644
--- a/js/pmd/move.js
+++ b/js/pmd/move.js
@@ -617,12 +617,11 @@ function Get_url_pos(forceString)
 {
     if (pmd_tables_enabled || forceString) {
         var poststr = '';
-        var argsep = PMA_commonParams.get('arg_separator');
         for (var key in j_tabs) {
-            poststr += argsep + 't_x[' + key + ']=' + parseInt(document.getElementById(key).style.left, 10);
-            poststr += argsep + 't_y[' + key + ']=' + parseInt(document.getElementById(key).style.top, 10);
-            poststr += argsep + 't_v[' + key + ']=' + (document.getElementById('id_tbody_' + key).style.display == 'none' ? 0 : 1);
-            poststr += argsep + 't_h[' + key + ']=' + (document.getElementById('check_vis_' + key).checked ? 1 : 0);
+            poststr += '&t_x[' + key + ']=' + parseInt(document.getElementById(key).style.left, 10);
+            poststr += '&t_y[' + key + ']=' + parseInt(document.getElementById(key).style.top, 10);
+            poststr += '&t_v[' + key + ']=' + (document.getElementById('id_tbody_' + key).style.display == 'none' ? 0 : 1);
+            poststr += '&t_h[' + key + ']=' + (document.getElementById('check_vis_' + key).checked ? 1 : 0);
         }
         return poststr;
     } else {
@@ -642,9 +641,8 @@ function Get_url_pos(forceString)
 function Save2(callback)
 {
     if (pmd_tables_enabled) {
-        var argsep = PMA_commonParams.get('arg_separator');
-        var poststr = argsep + 'operation=savePage' + argsep + 'save_page=same' + argsep + 'ajax_request=true';
-        poststr += argsep + 'server=' + server + argsep + 'db=' + db + argsep + 'token=' + PMA_commonParams.get('token') + argsep + 'selected_page=' + selected_page;
+        var poststr = '&operation=savePage&save_page=same&ajax_request=true';
+        poststr += '&server=' + server + '&db=' + db + '&token=' + PMA_commonParams.get('token') + '&selected_page=' + selected_page;
         poststr += Get_url_pos();
 
         var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
@@ -776,8 +774,7 @@ function Edit_pages()
         };
 
         var $msgbox = PMA_ajaxShowMessage();
-        var argsep = PMA_commonParams.get('arg_separator');
-        var params = 'ajax_request=true' + argsep + 'dialog=edit' + argsep + 'server=' + server + argsep + 'token=' + PMA_commonParams.get('token') + argsep + 'db=' + db;
+        var params = 'ajax_request=true&dialog=edit&server=' + server + '&token=' + PMA_commonParams.get('token') + '&db=' + db;
         $.get("db_designer.php", params, function (data) {
             if (data.success === false) {
                 PMA_ajaxShowMessage(data.error, false);
@@ -857,8 +854,7 @@ function Delete_pages()
     };
 
     var $msgbox = PMA_ajaxShowMessage();
-    var argsep = PMA_commonParams.get('arg_separator');
-    var params = 'ajax_request=true' + argsep + 'dialog=delete' + argsep + 'server=' + server + argsep + 'token=' + PMA_commonParams.get('token') + argsep + 'db=' + db;
+    var params = 'ajax_request=true&dialog=delete&server=' + server + '&token=' + PMA_commonParams.get('token') + '&db=' + db;
     $.get("db_designer.php", params, function (data) {
         if (data.success === false) {
             PMA_ajaxShowMessage(data.error, false);
@@ -957,8 +953,7 @@ function Save_as()
     };
 
     var $msgbox = PMA_ajaxShowMessage();
-    var argsep = PMA_commonParams.get('arg_separator');
-    var params = 'ajax_request=true' + argsep + 'dialog=save_as' + argsep + 'server=' + server + argsep + 'token=' + PMA_commonParams.get('token') + argsep + 'db=' + db;
+    var params = 'ajax_request=true&dialog=save_as&server=' + server + '&token=' + PMA_commonParams.get('token') + '&db=' + db;
     $.get("db_designer.php", params, function (data) {
         if (data.success === false) {
             PMA_ajaxShowMessage(data.error, false);
@@ -1035,8 +1030,7 @@ function Export_pages()
         $(this).dialog('close');
     };
     var $msgbox = PMA_ajaxShowMessage();
-    var argsep = PMA_commonParams.get('arg_separator');
-    var params = 'ajax_request=true' + argsep + 'dialog=export' + argsep + 'server=' + server + argsep + 'token=' + PMA_commonParams.get('token') + argsep + 'db=' + db + argsep + 'selected_page=' + selected_page;
+    var params = 'ajax_request=true&dialog=export&server=' + server + '&token=' + PMA_commonParams.get('token') + '&db=' + db + '&selected_page=' + selected_page;
     $.get("db_designer.php", params, function (data) {
         if (data.success === false) {
             PMA_ajaxShowMessage(data.error, false);
@@ -1047,7 +1041,7 @@ function Export_pages()
             if (!pmd_tables_enabled) {
                 $form.append('<input type="hidden" name="offline_export" value="true" />');
             }
-            $.each(Get_url_pos(true).substring(1).split(argsep), function() {
+            $.each(Get_url_pos(true).substring(1).split('&'), function() {
                 var pair = this.split('=');
                 var input = $('<input type="hidden" />');
                 input.attr('name', pair[0]);
@@ -1080,11 +1074,10 @@ function Export_pages()
 function Load_page(page) {
     if (pmd_tables_enabled) {
         var param_page = '';
-        var argsep = PMA_commonParams.get('arg_separator');
         if (page !== null) {
-            param_page = argsep + 'page=' + page;
+            param_page = '&page=' + page;
         }
-        $('<a href="db_designer.php?server=' + server + argsep + 'db=' + db + argsep + 'token=' + PMA_commonParams.get('token') + param_page + '"></a>')
+        $('<a href="db_designer.php?server=' + server + '&db=' + db + '&token=' + PMA_commonParams.get('token') + param_page + '"></a>')
             .appendTo($('#page_content'))
             .click();
     } else {
@@ -1165,7 +1158,6 @@ function Start_relation()
 function Click_field(T, f, PK) // table field
 {
     PK = parseInt(PK);
-    var argsep = PMA_commonParams.get('arg_separator');
     if (ON_relation) {
         if (!click_field) {
             //.style.display=='none'        .style.display = 'none'
@@ -1177,7 +1169,7 @@ function Click_field(T, f, PK) // table field
                 document.getElementById('foreign_relation').style.display = 'none';
             }
             click_field = 1;
-            link_relation = 'T1=' + T + argsep + 'F1=' + f;
+            link_relation = "T1=" + T + "&F1=" + f;
             document.getElementById('pmd_hint').innerHTML = PMA_messages.strSelectForeignKey;
         } else {
             Start_relation(); // hidden hint...
@@ -1189,7 +1181,7 @@ function Click_field(T, f, PK) // table field
             var top = Glob_Y - document.getElementById('layer_new_relation').offsetHeight;
             document.getElementById('layer_new_relation').style.top  = top + 'px';
             document.getElementById('layer_new_relation').style.display = 'block';
-            link_relation += argsep + 'T2=' + T + argsep + 'F2=' + f;
+            link_relation += '&T2=' + T + '&F2=' + f;
         }
     }
 
@@ -1228,10 +1220,9 @@ function Click_field(T, f, PK) // table field
 function New_relation()
 {
     document.getElementById('layer_new_relation').style.display = 'none';
-    var argsep = PMA_commonParams.get('arg_separator');
-    link_relation += argsep + 'server=' + server + argsep + 'db=' + db + argsep + 'token=' + PMA_commonParams.get('token');
-    link_relation += argsep + 'on_delete=' + document.getElementById('on_delete').value + argsep + 'on_update=' + document.getElementById('on_update').value;
-    link_relation += argsep + 'operation=addNewRelation' + argsep + 'ajax_request=true';
+    link_relation += '&server=' + server + '&db=' + db + '&token=' + PMA_commonParams.get('token');
+    link_relation += '&on_delete=' + document.getElementById('on_delete').value + '&on_update=' + document.getElementById('on_update').value;
+    link_relation += '&operation=addNewRelation&ajax_request=true';
 
     var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
     $.post('db_designer.php', link_relation, function (data) {
@@ -1453,17 +1444,15 @@ function Canvas_click(id, event)
         var top = Glob_Y - document.getElementById('layer_upd_relation').offsetHeight - 10;
         document.getElementById('layer_upd_relation').style.top = top + 'px';
         document.getElementById('layer_upd_relation').style.display = 'block';
-        var argsep = PMA_commonParams.get('arg_separator');
-        link_relation = 'T1=' + Key0 + argsep + 'F1=' + Key1 + argsep + 'T2=' + Key2 + argsep + 'F2=' + Key3 + argsep + 'K=' + Key;
+        link_relation = 'T1=' + Key0 + '&F1=' + Key1 + '&T2=' + Key2 + '&F2=' + Key3 + '&K=' + Key;
     }
 }
 
 function Upd_relation()
 {
     document.getElementById('layer_upd_relation').style.display = 'none';
-    var argsep = PMA_commonParams.get('arg_separator');
-    link_relation += argsep + 'server=' + server + argsep + 'db=' + db + argsep + 'token=' + PMA_commonParams.get('token');
-    link_relation += argsep + 'operation=removeRelation' + argsep + 'ajax_request=true';
+    link_relation += '&server=' + server + '&db=' + db + '&token=' + PMA_commonParams.get('token');
+    link_relation += '&operation=removeRelation&ajax_request=true';
 
     var $msgbox = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
     $.post('db_designer.php', link_relation, function (data) {
diff --git a/js/server_databases.js b/js/server_databases.js
index d73a5d0d2e..ec0faf05f9 100644
--- a/js/server_databases.js
+++ b/js/server_databases.js
@@ -57,11 +57,10 @@ AJAX.registerOnload('server_databases.js', function () {
         var question = PMA_messages.strDropDatabaseStrongWarning + ' ' +
             PMA_sprintf(PMA_messages.strDoYouReally, selected_dbs.join('<br />'));
 
-        var argsep = PMA_commonParams.get('arg_separator');
         $(this).PMA_confirm(
             question,
             $form.prop('action') + '?' + $(this).serialize() +
-                argsep + 'drop_selected_dbs=1' + argsep + 'is_js_confirmed=1' + argsep + 'ajax_request=true',
+                '&drop_selected_dbs=1&is_js_confirmed=1&ajax_request=true',
             function (url) {
                 PMA_ajaxShowMessage(PMA_messages.strProcessingRequest, false);
 
@@ -125,7 +124,7 @@ AJAX.registerOnload('server_databases.js', function () {
                 // make ajax request to load db structure page - taken from ajax.js
                 var dbStruct_url = data.url_query;
                 dbStruct_url = dbStruct_url.replace(/amp;/ig, '');
-                var params = 'ajax_request=true' + PMA_commonParams.get('arg_separator') + 'ajax_page_request=true';
+                var params = 'ajax_request=true&ajax_page_request=true';
                 if (! (history && history.pushState)) {
                     params += PMA_MicroHistory.menus.getRequestParam();
                 }
diff --git a/js/server_privileges.js b/js/server_privileges.js
index dc8355f3c6..74461300da 100644
--- a/js/server_privileges.js
+++ b/js/server_privileges.js
@@ -177,8 +177,7 @@ AJAX.registerOnload('server_privileges.js', function () {
 
             PMA_ajaxShowMessage(PMA_messages.strRemovingSelectedUsers);
 
-            var argsep = PMA_commonParams.get('arg_separator');
-            $.post(url, $form.serialize() + argsep + 'delete=' + $thisButton.val() + argsep + 'ajax_request=true', function (data) {
+            $.post(url, $form.serialize() + "&delete=" + $thisButton.val() + "&ajax_request=true", function (data) {
                 if (typeof data !== 'undefined' && data.success === true) {
                     PMA_ajaxShowMessage(data.message);
                     // Refresh navigation, if we droppped some databases with the name
@@ -237,10 +236,9 @@ AJAX.registerOnload('server_privileges.js', function () {
                             .find('select[name="userGroup"]')
                             .val();
                         var $message = PMA_ajaxShowMessage();
-                        var argsep = PMA_commonParams.get('arg_separator');
                         $.post(
                             'server_privileges.php',
-                            $('#changeUserGroupDialog').find('form').serialize() + argsep + 'ajax_request=1',
+                            $('#changeUserGroupDialog').find('form').serialize() + '&ajax_request=1',
                             function (data) {
                                 PMA_ajaxRemoveMessage($message);
                                 if (typeof data !== 'undefined' && data.success === true) {
@@ -304,10 +302,9 @@ AJAX.registerOnload('server_privileges.js', function () {
         button_options[PMA_messages.strClose] = function () {
             $(this).dialog("close");
         };
-        var argsep = PMA_commonParams.get('arg_separator');
         $.post(
             $(this.form).prop('action'),
-            $(this.form).serialize() + argsep + 'submit_mult=export' + argsep + 'ajax_request=true',
+            $(this.form).serialize() + '&submit_mult=export&ajax_request=true',
             function (data) {
                 if (typeof data !== 'undefined' && data.success === true) {
                     var $ajaxDialog = $('<div />')
diff --git a/js/sql.js b/js/sql.js
index 4f49e9ce46..57b0c185fa 100644
--- a/js/sql.js
+++ b/js/sql.js
@@ -168,11 +168,10 @@ AJAX.registerOnload('sql.js', function () {
         var $link = $(this);
         $link.PMA_confirm(question, $link.attr('href'), function (url) {
             $msgbox = PMA_ajaxShowMessage();
-            var argsep = PMA_commonParams.get('arg_separator');
-            var params = 'ajax_request=1' + argsep + 'is_js_confirmed=1';
+            var params = 'ajax_request=1&is_js_confirmed=1';
             var postData = $link.getPostData();
             if (postData) {
-                params += argsep + postData;
+                params += '&' + postData;
             }
             $.post(url, params, function (data) {
                 if (data.success) {
@@ -189,8 +188,7 @@ AJAX.registerOnload('sql.js', function () {
     $(document).on('submit', '.bookmarkQueryForm', function (e) {
         e.preventDefault();
         PMA_ajaxShowMessage();
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post($(this).attr('action'), 'ajax_request=1' + argsep + $(this).serialize(), function (data) {
+        $.post($(this).attr('action'), 'ajax_request=1&' + $(this).serialize(), function (data) {
             if (data.success) {
                 PMA_ajaxShowMessage(data.message);
             } else {
@@ -459,8 +457,7 @@ AJAX.registerOnload('sql.js', function () {
 
         PMA_prepareForAjaxRequest($form);
 
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post($form.attr('action'), $form.serialize() + argsep + 'ajax_page_request=true', function (data) {
+        $.post($form.attr('action'), $form.serialize() + '&ajax_page_request=true', function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 // success happens if the query returns rows or not
 
@@ -572,8 +569,7 @@ AJAX.registerOnload('sql.js', function () {
         $form = $(this);
 
         var $msgbox = PMA_ajaxShowMessage();
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post($form.attr('action'), $form.serialize() + argsep + 'ajax_request=true', function (data) {
+        $.post($form.attr('action'), $form.serialize() + '&ajax_request=true', function (data) {
             PMA_ajaxRemoveMessage($msgbox);
             var $sqlqueryresults = $form.parents(".sqlqueryresults");
             $sqlqueryresults
@@ -624,8 +620,7 @@ AJAX.registerOnload('sql.js', function () {
         }
 
         function submitShowAllForm() {
-            var argsep = PMA_commonParams.get('arg_separator');
-            var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true';
+            var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true';
             PMA_ajaxShowMessage();
             AJAX.source = $form;
             $.post($form.attr('action'), submitData, AJAX.responseHandler);
@@ -725,8 +720,7 @@ AJAX.registerOnload('sql.js', function () {
         e.preventDefault();
         var $button = $(this);
         var $form = $button.closest('form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'submit_mult=' + $button.val();
+        var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true&submit_mult=' + $button.val();
         PMA_ajaxShowMessage();
         AJAX.source = $form;
         $.post($form.attr('action'), submitData, AJAX.responseHandler);
diff --git a/js/tbl_operations.js b/js/tbl_operations.js
index 77912818f4..3783058e40 100644
--- a/js/tbl_operations.js
+++ b/js/tbl_operations.js
@@ -24,8 +24,7 @@ AJAX.registerOnload('tbl_operations.js', function () {
         event.preventDefault();
         var $form = $(this);
         PMA_prepareForAjaxRequest($form);
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post($form.attr('action'), $form.serialize() + argsep + 'submit_copy=Go', function (data) {
+        $.post($form.attr('action'), $form.serialize() + "&submit_copy=Go", function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 if ($form.find("input[name='switch_to_new']").prop('checked')) {
                     PMA_commonParams.set(
@@ -57,8 +56,7 @@ AJAX.registerOnload('tbl_operations.js', function () {
         event.preventDefault();
         var $form = $(this);
         PMA_prepareForAjaxRequest($form);
-        var argsep = PMA_commonParams.get('arg_separator');
-        $.post($form.attr('action'), $form.serialize() + argsep + 'submit_move=1', function (data) {
+        $.post($form.attr('action'), $form.serialize() + "&submit_move=1", function (data) {
             if (typeof data !== 'undefined' && data.success === true) {
                 PMA_commonParams.set('db', data._params.db);
                 PMA_commonParams.set('table', data._params.tbl);
@@ -145,7 +143,7 @@ AJAX.registerOnload('tbl_operations.js', function () {
         });
         var postData = $link.getPostData();
         if (postData) {
-            params += PMA_commonParams.get('arg_separator') + postData;
+            params += '&' + postData;
         }
 
         $.post($link.attr('href'), params, function (data) {
@@ -195,8 +193,7 @@ AJAX.registerOnload('tbl_operations.js', function () {
         var $form = $(this);
 
         function submitPartitionMaintenance() {
-            var argsep = PMA_commonParams.get('arg_separator');
-            var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true';
+            var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true';
             PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
             AJAX.source = $form;
             $.post($form.attr('action'), submitData, AJAX.responseHandler);
diff --git a/js/tbl_relation.js b/js/tbl_relation.js
index 14a13d38da..8f09c0f8e1 100644
--- a/js/tbl_relation.js
+++ b/js/tbl_relation.js
@@ -69,19 +69,18 @@ function getDropdownValues($dropdown) {
     }
     var $msgbox = PMA_ajaxShowMessage();
     var $form = $dropdown.parents('form');
-    var argsep = PMA_commonParams.get('arg_separator');
-    var url = 'tbl_relation.php?getDropdownValues=true' + argsep + 'ajax_request=true' +
-        argsep + 'token=' + $form.find('input[name="token"]').val() +
-        argsep + 'db=' + $form.find('input[name="db"]').val() +
-        argsep + 'table=' + $form.find('input[name="table"]').val() +
-        argsep + 'foreign=' + (foreign !== '') +
-        argsep + 'foreignDb=' + encodeURIComponent(foreignDb) +
+    var url = 'tbl_relation.php?getDropdownValues=true&ajax_request=true' +
+        '&token=' + $form.find('input[name="token"]').val() +
+        '&db=' + $form.find('input[name="db"]').val() +
+        '&table=' + $form.find('input[name="table"]').val() +
+        '&foreign=' + (foreign !== '') +
+        '&foreignDb=' + encodeURIComponent(foreignDb) +
         (foreignTable !== null ?
-            argsep + 'foreignTable=' + encodeURIComponent(foreignTable) : ''
+            '&foreignTable=' + encodeURIComponent(foreignTable) : ''
         );
     var $server = $form.find('input[name="server"]');
     if ($server.length > 0) {
-        url += argsep + 'server=' + $form.find('input[name="server"]').val();
+        url += '&server=' + $form.find('input[name="server"]').val();
     }
     $.ajax({
         url: url,
diff --git a/js/tbl_structure.js b/js/tbl_structure.js
index b0131a667a..d66c1141ff 100644
--- a/js/tbl_structure.js
+++ b/js/tbl_structure.js
@@ -54,7 +54,7 @@ function PMA_tbl_structure_menu_resizer_callback() {
  * Reload fields table
  */
 function reloadFieldForm() {
-    $.post($("#fieldsForm").attr('action'), $("#fieldsForm").serialize() + PMA_commonParams.get('arg_separator') + "ajax_request=true", function (form_data) {
+    $.post($("#fieldsForm").attr('action'), $("#fieldsForm").serialize() + "&ajax_request=true", function (form_data) {
         var $temp_div = $("<div id='temp_div'><div>").append(form_data.message);
         $("#fieldsForm").replaceWith($temp_div.find("#fieldsForm"));
         $("#addColumns").replaceWith($temp_div.find("#addColumns"));
@@ -112,7 +112,7 @@ AJAX.registerOnload('tbl_structure.js', function () {
 
         function submitForm(){
             $msg = PMA_ajaxShowMessage(PMA_messages.strProcessingRequest);
-            $.post($form.attr('action'), $form.serialize() + PMA_commonParams.get('arg_separator') + 'do_save_data=1', function (data) {
+            $.post($form.attr('action'), $form.serialize() + '&do_save_data=1', function (data) {
                 if ($(".sqlqueryresults").length !== 0) {
                     $(".sqlqueryresults").remove();
                 } else if ($(".error:not(.tab)").length !== 0) {
@@ -215,7 +215,7 @@ AJAX.registerOnload('tbl_structure.js', function () {
         $this_anchor.PMA_confirm(question, $this_anchor.attr('href'), function (url) {
             var $msg = PMA_ajaxShowMessage(PMA_messages.strDroppingColumn, false);
             var params = getJSConfirmCommonParam(this, $this_anchor.getPostData());
-            params += PMA_commonParams.get('arg_separator') + 'ajax_page_request=1';
+            params += '&ajax_page_request=1';
             $.post(url, params, function (data) {
                 if (typeof data !== 'undefined' && data.success === true) {
                     PMA_ajaxRemoveMessage($msg);
@@ -301,7 +301,7 @@ AJAX.registerOnload('tbl_structure.js', function () {
             AJAX.source = $this;
 
             var params = getJSConfirmCommonParam(this, $this_anchor.getPostData());
-            params += PMA_commonParams.get('arg_separator') + 'ajax_page_request=1';
+            params += '&ajax_page_request=1';
             $.post(url, params, AJAX.responseHandler);
         }); // end $.PMA_confirm()
     }); //end Add key
@@ -336,7 +336,7 @@ AJAX.registerOnload('tbl_structure.js', function () {
                 return;
             }
 
-            $.post($form.prop("action"), serialized + PMA_commonParams.get('arg_separator') + "ajax_request=true", function (data) {
+            $.post($form.prop("action"), serialized + "&ajax_request=true", function (data) {
                 if (data.success === false) {
                     PMA_ajaxRemoveMessage($msgbox);
                     $this
@@ -443,8 +443,7 @@ AJAX.registerOnload('tbl_structure.js', function () {
         e.preventDefault();
         var $button = $(this);
         var $form = $button.parents('form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'submit_mult=' + $button.val();
+        var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true&submit_mult=' + $button.val();
         PMA_ajaxShowMessage();
         AJAX.source = $form;
         $.post($form.attr('action'), submitData, AJAX.responseHandler);
diff --git a/js/tbl_tracking.js b/js/tbl_tracking.js
index 8df7e85edf..c037917d93 100644
--- a/js/tbl_tracking.js
+++ b/js/tbl_tracking.js
@@ -54,8 +54,7 @@ AJAX.registerOnload('tbl_tracking.js', function () {
         e.preventDefault();
         var $button = $(this);
         var $form = $button.parent('form');
-        var argsep = PMA_commonParams.get('arg_separator');
-        var submitData = $form.serialize() + argsep + 'ajax_request=true' + argsep + 'ajax_page_request=true' + argsep + 'submit_mult=' + $button.val();
+        var submitData = $form.serialize() + '&ajax_request=true&ajax_page_request=true&submit_mult=' + $button.val();
 
         if ($button.val() == 'delete_version') {
             var question = PMA_messages.strDeleteTrackingVersionMultiple;
@@ -108,4 +107,4 @@ AJAX.registerOnload('tbl_tracking.js', function () {
             $.post(url, params, AJAX.responseHandler);
         });
     });
-});
+});
\ No newline at end of file
diff --git a/libraries/Header.php b/libraries/Header.php
index a06ddeb2a2..d85b84606c 100644
--- a/libraries/Header.php
+++ b/libraries/Header.php
@@ -246,8 +246,7 @@ class Header
             'LoginCookieValidity' => $GLOBALS['cfg']['LoginCookieValidity'],
             'session_gc_maxlifetime' => (int)@ini_get('session.gc_maxlifetime'),
             'logged_in' => isset($GLOBALS['userlink']) ? true : false,
-            'PMA_VERSION' => PMA_VERSION,
-            'arg_separator' => URL::getArgSeparator(),
+            'PMA_VERSION' => PMA_VERSION
         );
         if (isset($GLOBALS['cfg']['Server'])
             && isset($GLOBALS['cfg']['Server']['auth_type'])