diff --git a/libraries/config/user_preferences.forms.php b/libraries/config/user_preferences.forms.php
index a0270073f..cfa78ae6e 100644
--- a/libraries/config/user_preferences.forms.php
+++ b/libraries/config/user_preferences.forms.php
@@ -22,6 +22,7 @@
 
 $forms = array();
 $forms['Features']['General'] = array(
+    'AjaxEnable',
     'NaturalOrder',
     'InitialSlidersState',
     'ErrorIconic',