diff --git a/timeline.theme.inc b/timeline.theme.inc
index 499da2f..95c813f 100644
--- a/timeline.theme.inc
+++ b/timeline.theme.inc
@@ -102,7 +102,7 @@ function _timeline_include($timeline_theme) {
       elseif ($timeline_library_status == TRUE) {
 
         $timeline_lib_path = libraries_get_path('simile_timeline');
-        drupal_add_js(file_directory_path() . '/timeline/local_variables.js');
+        drupal_add_js(file_default_scheme() . ':/timeline/local_variables.js');
         drupal_add_js($timeline_lib_path . '/timeline_js/timeline-api.js');
 
         // include custom theme files (if activated)