diff --git a/source/Ox.UI/js/Core/URL.js b/source/Ox.UI/js/Core/URL.js
index 7e9f155f..b5e88d55 100644
--- a/source/Ox.UI/js/Core/URL.js
+++ b/source/Ox.UI/js/Core/URL.js
@@ -471,7 +471,9 @@ Ox.URL = function(options) {
             });
         }
         return hash.anchor || hash.query
-            ? '#' + hash.anchor + (
+            ? '#' + (
+                hash.anchor || ''
+            ) + (
                 hash.query ? '?' + Ox.serialize(obj) : ''
             )
             : '';