diff --git a/IPython/html/static/notebook/js/cell.js b/IPython/html/static/notebook/js/cell.js
index 7769fea8c..a747c8077 100644
--- a/IPython/html/static/notebook/js/cell.js
+++ b/IPython/html/static/notebook/js/cell.js
@@ -178,7 +178,6 @@ define([
      * @return {Boolean} `true` if CodeMirror should ignore the event, `false` Otherwise
      */
     Cell.prototype.handle_codemirror_keyevent = function (editor, event) {
-        var that = this;
         var shortcuts = this.keyboard_manager.edit_shortcuts;
 
         // if this is an edit_shortcuts shortcut, the global keyboard/shortcut