diff --git a/demo/index.html b/demo/index.html
index 48cf1d2..dbcc887 100644
--- a/demo/index.html
+++ b/demo/index.html
@@ -7,8 +7,8 @@
 <body>
     <ul>
         <li><a href="float.html">Float grid demo</a></li>
-        <li><a href="knockout.js">Knockout.js demo</a></li>
-        <li><a href="knockout2.js">Knockout.js demo (2)</a></li>
+        <li><a href="knockout.html">Knockout.js demo</a></li>
+        <li><a href="knockout2.html">Knockout.js demo (2)</a></li>
         <li><a href="nested.html">Nested grids demo</a></li>
         <li><a href="rtl.html">RTL demo</a></li>
         <li><a href="serialization.html">Serialization demo</a></li>
