diff --git a/public/js/icinga/ui.js b/public/js/icinga/ui.js
index 4e9ac0f74..a20cd9b37 100644
--- a/public/js/icinga/ui.js
+++ b/public/js/icinga/ui.js
@@ -362,7 +362,7 @@
                 if (loading === '') {
                     loading = '<br />Loading:<br />';
                 }
-                loading += el + ' => ' + req.url;
+                loading += el + ' => ' + encodeURI(req.url);
             });
 
             $('#responsive-debug').html(