diff --git a/lib/ace/mouse/mouse_handler.js b/lib/ace/mouse/mouse_handler.js
index 596d8503..26985862 100644
--- a/lib/ace/mouse/mouse_handler.js
+++ b/lib/ace/mouse/mouse_handler.js
@@ -64,7 +64,7 @@ var MouseHandler = function(editor) {
         event.addMultiMouseDownListener(editor.renderer.scrollBarH.inner, [400, 300, 250], this, "onMouseEvent");
         if (useragent.isIE) {
             event.addListener(editor.renderer.scrollBarV.element, "mousedown", focusEditor);
-            event.addListener(editor.renderer.scrollBarH.element, "mousemove", focusEditor);
+            event.addListener(editor.renderer.scrollBarH.element, "mousedown", focusEditor);
         }
     }
     event.addMouseWheelListener(editor.container, this.onMouseWheel.bind(this, "mousewheel"));