diff --git a/js/external_iframe.js b/js/external_iframe.js
index 199f0db..894bc07 100644
--- a/js/external_iframe.js
+++ b/js/external_iframe.js
@@ -18,7 +18,7 @@
       });
 
     // Rewrite external links
-      var appendUrl = '/external?url=';
+      var appendUrl = Drupal.settings.basePath+'external?url=';
       var http_host = location.hostname.split('.');
       if (http_host.length == 3) {
         var host = http_host[1] + '.' + http_host[2];