diff --git a/static/js/Editor.js b/static/js/Editor.js
index 232f2ad..afb88aa 100644
--- a/static/js/Editor.js
+++ b/static/js/Editor.js
@@ -1031,10 +1031,11 @@ Editor.prototype.cleanup_html = function ( key_code ) {
 }
 
 Editor.prototype.cleanup_range = function () {
-  if ( this.iframe.contentWindow.getSelection )
+  if ( this.iframe && this.iframe.contentWindow.getSelection ) {
     var selection =  this.iframe.contentWindow.getSelection();
     if ( selection.isCollapsed )
       this.exec_command( "removeformat" );
+  }
 }
 
 Editor.prototype.unformat_selection = function () {