diff --git a/demos/progressbar/resize.html b/demos/progressbar/resize.html
index fb99ab8ee..c16b1c081 100644
--- a/demos/progressbar/resize.html
+++ b/demos/progressbar/resize.html
@@ -7,6 +7,7 @@
 	<script type="text/javascript" src="../../jquery-1.4.2.js"></script>
 	<script type="text/javascript" src="../../ui/jquery.ui.core.js"></script>
 	<script type="text/javascript" src="../../ui/jquery.ui.widget.js"></script>
+	<script type="text/javascript" src="../../ui/jquery.ui.mouse.js"></script>
 	<script type="text/javascript" src="../../ui/jquery.ui.progressbar.js"></script>
 	<script type="text/javascript" src="../../ui/jquery.ui.resizable.js"></script>
 	<link type="text/css" href="../demos.css" rel="stylesheet" />