diff --git a/static/js/index.js b/static/js/index.js
index f717cc3..e3e19a5 100644
--- a/static/js/index.js
+++ b/static/js/index.js
@@ -226,7 +226,7 @@ function aceEditEvent(hook_name, context, cb){
   var callstack, x$;
   callstack = context.callstack;
   if (callstack.type !== 'setWraps') {
-    return;
+    return false;
   }
   x$ = $('iframe[name="ace_outer"]').contents();
   x$.find('#sidediv').css({
@@ -267,4 +267,4 @@ if (!isStyleFuncSupported) {
 }
 RegExp.escape = function(text){
   return text.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&');
-};
\ No newline at end of file
+};