diff --git a/template.php b/template.php
index f96cec2..3ebd8f7 100644
--- a/template.php
+++ b/template.php
@@ -241,7 +241,7 @@ function adminimal_css_alter(&$css) {
  */
 function adminimal_js_alter(&$javascript) {
   // Fix module filter available updates page.
-  if (isset($javascript[drupal_get_path('module','module_filter').'/js/update_status.js'])) {
+  if (module_exists('module_filter') && isset($javascript[drupal_get_path('module','module_filter').'/js/update_status.js'])) {
     $javascript[drupal_get_path('module','module_filter').'/js/update_status.js']['data'] = drupal_get_path('theme', 'adminimal') . '/js/update_status.js';
   }
 }