diff --git a/core/modules/system/tests/modules/entity_test/src/Routing/EntityTestRoutes.php b/core/modules/system/tests/modules/entity_test/src/Routing/EntityTestRoutes.php
index 6860a61..0013549 100644
--- a/core/modules/system/tests/modules/entity_test/src/Routing/EntityTestRoutes.php
+++ b/core/modules/system/tests/modules/entity_test/src/Routing/EntityTestRoutes.php
@@ -30,6 +30,12 @@ public function routes() {
         array('_entity_form' => "$entity_type_id.default"),
         array('_permission' => 'administer entity_test content')
       );
+      $routes["entity.$entity_type_id.admin_form"] = new Route(
+        "$entity_type_id/structure/{bundle}",
+        array('_controller' => '\Drupal\entity_test\Controller\EntityTestController::testAdmin'),
+        array('_permission' => 'administer entity_test content'),
+        array('_admin_route' => TRUE)
+      );
     }
     return $routes;
   }