diff --git a/src/static/js/ace2_inner.js b/src/static/js/ace2_inner.js
index b61c50e38..6e5f07bcb 100644
--- a/src/static/js/ace2_inner.js
+++ b/src/static/js/ace2_inner.js
@@ -5401,7 +5401,9 @@ function Ace2Inner(){
   
   // Init documentAttributeManager
   documentAttributeManager = new AttributeManager(rep, performDocumentApplyChangeset);
-  editorInfo.ace_performDocumentApplyAttributesToRange = documentAttributeManager.setAttributesOnRange;
+  editorInfo.ace_performDocumentApplyAttributesToRange = function () {
+    return documentAttributeManager.setAttributesOnRange.apply(documentAttributeManager, arguments);
+  };
 
   $(document).ready(function(){
     doc = document; // defined as a var in scope outside