diff --git a/core/includes/common.inc b/core/includes/common.inc
index 2987b63..bf896c1 100644
--- a/core/includes/common.inc
+++ b/core/includes/common.inc
@@ -1526,10 +1526,7 @@ function _drupal_add_js($data = NULL, $options = NULL) {
           $current_query = \Drupal::service('request_stack')->getCurrentRequest()->query->all();
           url('', array('script' => &$scriptPath, 'prefix' => &$pathPrefix));
           $current_path = current_path();
-          $current_path_is_admin = FALSE;
-          if (!(defined('MAINTENANCE_MODE'))) {
-            $current_path_is_admin = FALSE;
-          }
+          $current_path_is_admin = \Drupal::service('router.admin_context')->isAdminRoute();
           $path = array(
             'basePath' => base_path(),
             'scriptPath' => $scriptPath,