diff --git a/modules/system/system.module b/modules/system/system.module
index 0a845f7..744253d 100644
--- a/modules/system/system.module
+++ b/modules/system/system.module
@@ -1176,6 +1176,10 @@ function system_library() {
     'version' => VERSION,
     'js' => array(
       'misc/autocomplete.js' => array('group' => JS_DEFAULT),
+      array(
+        'type' => 'setting',
+        'data' => array('ajaxErrorDisplay' => variable_get('ajax_error_level', AJAX_ERROR_REPORTING_ALERT)),
+      ),
     ),
   );