diff --git a/games/media/js/undum.js b/games/media/js/undum.js
index 0d04d3b..744bfd9 100644
--- a/games/media/js/undum.js
+++ b/games/media/js/undum.js
@@ -1619,9 +1619,8 @@
                 a.replaceWith($("<span>").addClass("ex_link").html(a.html()));
             });
             var contentToHide = $('#content .transient, #content ul.options');
-            var that = this;
             contentToHide.add($("#content a").filter(function(){
-                return that.attr("href").match(/[?&]transient[=&]?/);
+                return $(this).attr("href").match(/[?&]transient[=&]?/);
             }));
             if (interactive) {
                 if (mobile) {