diff --git a/source/Ox.UI/js/Core/URL.js b/source/Ox.UI/js/Core/URL.js
index 098b198a..32d993fa 100644
--- a/source/Ox.UI/js/Core/URL.js
+++ b/source/Ox.UI/js/Core/URL.js
@@ -580,7 +580,7 @@ Ox.URL = function(options) {
     }
 
     function encodeValue(value, isItem) {
-        var chars = isItem ? '/?#%' : '*=&|()#%',
+        var chars = isItem ? '/?#%' : '*=&|()?#%',
             ret = '';
         value.toString().split('').forEach(function(char) {
             var index = chars.indexOf(char);