diff --git a/libraries/classes/Normalization.php b/libraries/classes/Normalization.php
index d40282a12b..76d541d66e 100644
--- a/libraries/classes/Normalization.php
+++ b/libraries/classes/Normalization.php
@@ -152,7 +152,7 @@ class Normalization
             'fields_meta' => null,
             'mimework' => $cfgRelation['mimework'],
             'content_cells' => $contentCells,
-            'change_column' => $_REQUEST['change_column'],
+            'change_column' => $_POST['change_column'],
             'is_virtual_columns_supported' => Util::isVirtualColumnsSupported(),
             'browse_mime' => $GLOBALS['cfg']['BrowseMIME'],
             'server_type' => Util::getServerType(),
diff --git a/normalization.php b/normalization.php
index 8f3c55c2a4..dee32917d2 100644
--- a/normalization.php
+++ b/normalization.php
@@ -15,7 +15,7 @@ require_once 'libraries/common.inc.php';
 
 $normalization = new Normalization($GLOBALS['dbi']);
 
-if (isset($_REQUEST['getColumns'])) {
+if (isset($_POST['getColumns'])) {
     $html = '<option selected disabled>' . __('Select one…') . '</option>'
         . '<option value="no_such_col">' . __('No such column') . '</option>';
     //get column whose datatype falls under string category
@@ -27,14 +27,14 @@ if (isset($_REQUEST['getColumns'])) {
     echo $html;
     exit;
 }
-if (isset($_REQUEST['splitColumn'])) {
-    $num_fields = min(4096, intval($_REQUEST['numFields']));
+if (isset($_POST['splitColumn'])) {
+    $num_fields = min(4096, intval($_POST['numFields']));
     $html = $normalization->getHtmlForCreateNewColumn($num_fields, $db, $table);
     $html .= Url::getHiddenInputs($db, $table);
     echo $html;
     exit;
 }
-if (isset($_REQUEST['addNewPrimary'])) {
+if (isset($_POST['addNewPrimary'])) {
     $num_fields = 1;
     $columnMeta = array('Field'=>$table . "_id", 'Extra'=>'auto_increment');
     $html = $normalization->getHtmlForCreateNewColumn(
@@ -44,14 +44,14 @@ if (isset($_REQUEST['addNewPrimary'])) {
     echo $html;
     exit;
 }
-if (isset($_REQUEST['findPdl'])) {
+if (isset($_POST['findPdl'])) {
     $html = $normalization->findPartialDependencies($table, $db);
     echo $html;
     exit;
 }
 
-if (isset($_REQUEST['getNewTables2NF'])) {
-    $partialDependencies = json_decode($_REQUEST['pd']);
+if (isset($_POST['getNewTables2NF'])) {
+    $partialDependencies = json_decode($_POST['pd']);
     $html = $normalization->getHtmlForNewTables2NF($partialDependencies, $table);
     echo $html;
     exit;
@@ -59,9 +59,9 @@ if (isset($_REQUEST['getNewTables2NF'])) {
 
 $response = Response::getInstance();
 
-if (isset($_REQUEST['getNewTables3NF'])) {
-    $dependencies = json_decode($_REQUEST['pd']);
-    $tables = json_decode($_REQUEST['tables']);
+if (isset($_POST['getNewTables3NF'])) {
+    $dependencies = json_decode($_POST['pd']);
+    $tables = json_decode($_POST['tables']);
     $newTables = $normalization->getHtmlForNewTables3NF($dependencies, $tables, $db);
     $response->disable();
     Core::headerJSON();
@@ -74,18 +74,18 @@ $scripts = $header->getScripts();
 $scripts->addFile('normalization.js');
 $scripts->addFile('vendor/jquery/jquery.uitablefilter.js');
 $normalForm = '1nf';
-if (Core::isValid($_REQUEST['normalizeTo'], array('1nf', '2nf', '3nf'))) {
-    $normalForm = $_REQUEST['normalizeTo'];
+if (Core::isValid($_POST['normalizeTo'], array('1nf', '2nf', '3nf'))) {
+    $normalForm = $_POST['normalizeTo'];
 }
-if (isset($_REQUEST['createNewTables2NF'])) {
-    $partialDependencies = json_decode($_REQUEST['pd']);
-    $tablesName = json_decode($_REQUEST['newTablesName']);
+if (isset($_POST['createNewTables2NF'])) {
+    $partialDependencies = json_decode($_POST['pd']);
+    $tablesName = json_decode($_POST['newTablesName']);
     $res = $normalization->createNewTablesFor2NF($partialDependencies, $tablesName, $table, $db);
     $response->addJSON($res);
     exit;
 }
-if (isset($_REQUEST['createNewTables3NF'])) {
-    $newtables = json_decode($_REQUEST['newTables']);
+if (isset($_POST['createNewTables3NF'])) {
+    $newtables = json_decode($_POST['newTables']);
     $res = $normalization->createNewTablesFor3NF($newtables, $db);
     $response->addJSON($res);
     exit;
@@ -101,23 +101,23 @@ if (isset($_POST['repeatingColumns'])) {
     $response->addJSON($res);
     exit;
 }
-if (isset($_REQUEST['step1'])) {
+if (isset($_POST['step1'])) {
     $html = $normalization->getHtmlFor1NFStep1($db, $table, $normalForm);
     $response->addHTML($html);
-} elseif (isset($_REQUEST['step2'])) {
+} elseif (isset($_POST['step2'])) {
     $res = $normalization->getHtmlContentsFor1NFStep2($db, $table);
     $response->addJSON($res);
-} elseif (isset($_REQUEST['step3'])) {
+} elseif (isset($_POST['step3'])) {
     $res = $normalization->getHtmlContentsFor1NFStep3($db, $table);
     $response->addJSON($res);
-} elseif (isset($_REQUEST['step4'])) {
+} elseif (isset($_POST['step4'])) {
     $res = $normalization->getHtmlContentsFor1NFStep4($db, $table);
     $response->addJSON($res);
-} elseif (isset($_REQUEST['step']) && $_REQUEST['step'] == '2.1') {
+} elseif (isset($_POST['step']) && $_POST['step'] == '2.1') {
     $res = $normalization->getHtmlFor2NFstep1($db, $table);
     $response->addJSON($res);
-} elseif (isset($_REQUEST['step']) && $_REQUEST['step'] == '3.1') {
-    $tables = $_REQUEST['tables'];
+} elseif (isset($_POST['step']) && $_POST['step'] == '3.1') {
+    $tables = $_POST['tables'];
     $res = $normalization->getHtmlFor3NFstep1($db, $tables);
     $response->addJSON($res);
 } else {
diff --git a/test/classes/NormalizationTest.php b/test/classes/NormalizationTest.php
index f9bf1996c3..40c2d68ca3 100644
--- a/test/classes/NormalizationTest.php
+++ b/test/classes/NormalizationTest.php
@@ -41,7 +41,7 @@ class NormalizationTest extends TestCase
         $GLOBALS['table'] = 'PMA_table';
         $GLOBALS['server'] = 1;
         $GLOBALS['cfg']['Server']['DisableIS'] = false;
-        $_REQUEST['change_column'] = null;
+        $_POST['change_column'] = null;
 
         //$_SESSION