diff --git a/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php b/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
index b8d5ee9..2671b05 100644
--- a/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
+++ b/core/modules/comment/lib/Drupal/comment/Controller/AdminController.php
@@ -239,7 +239,7 @@ public function bundleTitle($field_name) {
    *   Then comment multiple delete confirmation form or the comments overview
    *   administration form.
    */
-  public function adminPage(Request $request, $type) {
+  public function adminPage(Request $request, $type = 'new') {
     $edit = $request->request->all();
 
     if (isset($edit['operation']) && ($edit['operation'] == 'delete') && isset($edit['comments']) && $edit['comments']) {