diff --git a/js/functions.js b/js/functions.js
index 8e93a1c6e1..4ae22420a7 100644
--- a/js/functions.js
+++ b/js/functions.js
@@ -3470,7 +3470,7 @@ AJAX.registerOnload('functions.js', function () {
                     '<table class=\'add\'><tr><td>' +
                     '<div class=\'slider\'></div>' +
                     '</td><td>' +
-                    '<form><div><input type=\'submit\' class=\'add_value\' value=\'' +
+                    '<form><div><input type=\'submit\' class=\'add_value btn btn-primary\' value=\'' +
                     Functions.sprintf(Messages.enum_addValue, 1) +
                     '\'></div></form>' +
                     '</td></tr></table>' +
diff --git a/js/normalization.js b/js/normalization.js
index 982ce6ed08..a4cdb0e660 100644
--- a/js/normalization.js
+++ b/js/normalization.js
@@ -332,7 +332,7 @@ function goTo2NFStep2 (pd, primaryKey) {
         });
     }
     $('#mainContent #extra').html(extra);
-    $('.tblFooters').html('<input type="button" value="' + Messages.strBack + '" id="backEditPd"><input type="button" id="goTo2NFFinish" value="' + Messages.strGo + '">');
+    $('.tblFooters').html('<input type="button" class="btn btn-primary" value="' + Messages.strBack + '" id="backEditPd"><input type="button" class="btn btn-primary" id="goTo2NFFinish" value="' + Messages.strGo + '">');
     $('#goTo2NFFinish').on('click', function () {
         goTo2NFFinish(pd);
     });
@@ -382,7 +382,7 @@ function goTo3NFStep2 (pd, tablesTds) {
         });
     }
     $('#mainContent #extra').html(extra);
-    $('.tblFooters').html('<input type="button" value="' + Messages.strBack + '" id="backEditPd"><input type="button" id="goTo3NFFinish" value="' + Messages.strGo + '">');
+    $('.tblFooters').html('<input type="button" class="btn btn-primary" value="' + Messages.strBack + '" id="backEditPd"><input type="button" class="btn btn-primary" id="goTo3NFFinish" value="' + Messages.strGo + '">');
     $('#goTo3NFFinish').on('click', function () {
         if (!pdFound) {
             goTo3NFFinish([]);
diff --git a/libraries/classes/Normalization.php b/libraries/classes/Normalization.php
index 6c3d73bfe8..a20f4768d9 100644
--- a/libraries/classes/Normalization.php
+++ b/libraries/classes/Normalization.php
@@ -245,7 +245,7 @@ class Normalization
             . "</select>"
             . "<span>" . __('split into ')
             . "</span><input id='numField' type='number' value='2'>"
-            . "<input type='submit' id='splitGo' value='" . __('Go') . "'></div>"
+            . '<input type="submit" class="btn btn-primary" id="splitGo" value="' . __('Go') . '"></div>'
             . "<div id='newCols'></div>"
             . "</fieldset><fieldset class='tblFooters'>"
             . "</fieldset>"
diff --git a/libraries/classes/Rte/Routines.php b/libraries/classes/Rte/Routines.php
index fdec365b5a..4cc2928362 100644
--- a/libraries/classes/Rte/Routines.php
+++ b/libraries/classes/Rte/Routines.php
@@ -974,7 +974,7 @@ class Routines
         $retval .= "<tr>";
         $retval .= "    <td>&nbsp;</td>";
         $retval .= "    <td>";
-        $retval .= "        <input type='button'";
+        $retval .= '        <input type="button" class="btn btn-primary"';
         $retval .= "               name='routine_addparameter'";
         $retval .= "               value='" . __('Add parameter') . "'>";
         $retval .= "        <input " . $disableRemoveParam . "";