diff --git a/demos/functional/templates/ui.datepicker.dlg.html b/demos/functional/templates/ui.datepicker.dlg.html
index cf30239d0..d2875a925 100644
--- a/demos/functional/templates/ui.datepicker.dlg.html
+++ b/demos/functional/templates/ui.datepicker.dlg.html
@@ -1,4 +1,4 @@
-<input type="text" size="10" value="" id="dialog" readonly="readonly"/> <button id="dialogButton">Open dialog</button>
+<input type="text" size="10" value="" id="dialog" readonly="readonly"/> <button id="dialogButton" type="button">Open dialog</button>
 <script type="text/javascript">
 function setDateFromDialog(date) { 
     $('#dialog').val(date);