diff --git a/lib/ace/mouse/mouse_handler.js b/lib/ace/mouse/mouse_handler.js
index 4ff31b2f..00574d24 100644
--- a/lib/ace/mouse/mouse_handler.js
+++ b/lib/ace/mouse/mouse_handler.js
@@ -129,7 +129,7 @@ var MouseHandler = function(editor) {
         };
         
         if (useragent.isOldIE && ev.domEvent.type == "dblclick") {
-            return setTimeout(function() {onCaptureEnd(ev.domEvent);});
+            return setTimeout(function() {onCaptureEnd(ev);});
         }
 
         event.capture(this.editor.container, onMouseMove, onCaptureEnd);