diff --git a/examples/wms-image-custom-proj.html b/examples/wms-image-custom-proj.html
index bbdd94039e..3f5c7793c8 100644
--- a/examples/wms-image-custom-proj.html
+++ b/examples/wms-image-custom-proj.html
@@ -46,7 +46,7 @@
 
     <script src="jquery.min.js" type="text/javascript"></script>
     <script src="http://cdnjs.cloudflare.com/ajax/libs/proj4js/2.2.1/proj4.js" type="text/javascript"></script>
-    <script src="http://epsg.io/21781.js" type="text/javascript"></script>
+    <script src="http://epsg.io/21781-1753.js" type="text/javascript"></script>
     <script src="../resources/example-behaviour.js" type="text/javascript"></script>
     <script src="loader.js?id=wms-image-custom-proj" type="text/javascript"></script>