diff --git a/tests/visual/dialog/default.html b/tests/visual/dialog/default.html
index 921379e529..38f00da46d 100644
--- a/tests/visual/dialog/default.html
+++ b/tests/visual/dialog/default.html
@@ -8,6 +8,7 @@
 	<script type="text/javascript" src="../../../external/jquery.bgiframe-2.1.1.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.draggable.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.position.js"></script>
 	<script type="text/javascript" src="../../../ui/jquery.ui.resizable.js"></script>