diff --git a/js/ajax-responder.js b/js/ajax-responder.js
index 61ddcf6..e244106 100644
--- a/js/ajax-responder.js
+++ b/js/ajax-responder.js
@@ -26,7 +26,7 @@
     // Grab all the links that match this url and add the fetching class.
     // This allows the caching system to grab each url once and only once
     // instead of grabbing the url once per <a>.
-    var $objects = $('a[href=' + old_url + ']')
+    var $objects = $('a[href="' + old_url + '"]')
     $objects.addClass('ctools-fetching');
     try {
       url = old_url.replace(/\/nojs(\/|$)/g, '/ajax$1');