diff --git a/test/libraries/PMA_user_preferences_test.php b/test/libraries/PMA_user_preferences_test.php
index fa0691e720..56c078a9f1 100644
--- a/test/libraries/PMA_user_preferences_test.php
+++ b/test/libraries/PMA_user_preferences_test.php
@@ -415,7 +415,7 @@ class PMA_User_Preferences_Test extends PHPUnit_Framework_TestCase
         $result = PMA_userprefsAutoloadGetHeader();
 
         $this->assertContains(
-            '<form action="prefs_manage.php" method="post">',
+            '<form action="prefs_manage.php" method="post" class="disableAjax">',
             $result
         );