diff --git a/core/authorize.php b/core/authorize.php
index c9e0cbe..f47ae3f 100644
--- a/core/authorize.php
+++ b/core/authorize.php
@@ -71,7 +71,6 @@ function authorize_access_allowed() {
 // variables, however, so we have access to the class autoloader.
 drupal_bootstrap(DRUPAL_BOOTSTRAP_VARIABLES);
 
-// A request object from the HTTPFoundation to tell us about the request.
 $request = Request::createFromGlobals();
 Drupal::getContainer()->set('request', $request);
 
@@ -140,7 +139,7 @@ function authorize_access_allowed() {
     $output .= theme('item_list', array('items' => $links, 'title' => t('Next steps')));
   }
   // If a batch is running, let it run.
-  elseif (isset($_GET['batch'])) {
+  elseif ($request->query->has('batch')) {
     $output = _batch_page($request);
   }
   else {