diff -u b/core/modules/system/tests/modules/system_test/system_test.routing.yml b/core/modules/system/tests/modules/system_test/system_test.routing.yml
--- b/core/modules/system/tests/modules/system_test/system_test.routing.yml
+++ b/core/modules/system/tests/modules/system_test/system_test.routing.yml
@@ -64,7 +64,7 @@
   defaults:
     _content: '\Drupal\system_test\Controller\SystemTestController::setHeader'
   requirements:
-    _permission: 'TRUE'
+    _access: 'TRUE'
 
 system_test.shutdown_functions:
   path: '/system-test/shutdown-functions/{arg1}/{arg2}'