diff --git a/core/modules/system/tests/modules/ajax_test/ajax_test.module b/core/modules/system/tests/modules/ajax_test/ajax_test.module
index 67a9340..3d01f2a 100644
--- a/core/modules/system/tests/modules/ajax_test/ajax_test.module
+++ b/core/modules/system/tests/modules/ajax_test/ajax_test.module
@@ -35,6 +35,10 @@ function ajax_test_menu() {
     'access callback' => TRUE,
     'type' => MENU_CALLBACK,
   );
+  $items['ajax-test/dialog'] = array(
+    'title' => 'AJAX Dialog',
+    'route_name' => 'ajax_test_dialog',
+  );
   $items['ajax-test/dialog-close'] = array(
     'title' => 'AJAX Dialog close',
     'page callback' => 'ajax_test_dialog_close',
diff --git a/core/modules/system/tests/modules/ajax_test/lib/Drupal/ajax_test/AjaxTestController.php b/core/modules/system/tests/modules/ajax_test/lib/Drupal/ajax_test/AjaxTestController.php
index 461316d..54b877a 100644
--- a/core/modules/system/tests/modules/ajax_test/lib/Drupal/ajax_test/AjaxTestController.php
+++ b/core/modules/system/tests/modules/ajax_test/lib/Drupal/ajax_test/AjaxTestController.php
@@ -25,8 +25,6 @@ public function dialogContents() {
    * Renders a form elements and links with #ajax['dialog'].
    */
   public function dialog() {
-    drupal_set_title('AJAX Dialog');
-
     // Add two wrapper elements for testing non-modal dialogs. Modal dialogs use
     // the global drupal-modal wrapper by default.
     $build['dialog_wrappers'] = array('#markup' => '<div id="ajax-test-dialog-wrapper-1"></div><div id="ajax-test-dialog-wrapper-2"></div>');