diff --git a/templates/client/static_client/js/banners.js b/templates/client/static_client/js/banners.js
index bd32b4fb..1f6126ca 100644
--- a/templates/client/static_client/js/banners.js
+++ b/templates/client/static_client/js/banners.js
@@ -15,10 +15,10 @@
 
                     if (value instanceof Array) {
                         for (var i = 0, l = value.length; i < l; i++) {
-                            search.push(key + "=" + value[i]);
+                            search.push(encodeURIComponent(key) + "=" + encodeURIComponent(value[i]));
                         }
                     } else {
-                        search.push(key + "=" + value);
+                        search.push(encodeURIComponent(key) + "=" + encodeURIComponent(value));
                     }
                 }
             }