diff --git a/BackendServers/WebServer/index.html b/BackendServers/WebServer/index.html
index 4ef127a80..5dff45d57 100644
--- a/BackendServers/WebServer/index.html
+++ b/BackendServers/WebServer/index.html
@@ -13,7 +13,7 @@
     <script type="text/javascript">
         function loadCanvas() {
             window.canvasApp = {
-                urlPrefix: 'http://localhost:WEB_SERVER_PORT/'
+                urlPrefix: ''
             };
 
             try {