diff --git a/core/core.services.yml b/core/core.services.yml
index bf6698b..56a12e3 100644
--- a/core/core.services.yml
+++ b/core/core.services.yml
@@ -388,7 +388,6 @@ services:
     arguments: ['@database', '@router.builder', '@state']
     tags:
       - { name: event_subscriber }
-    tags:
       - { name: backend_overridable }
   router.route_preloader:
     class: Drupal\Core\Routing\RoutePreloader
diff --git a/core/modules/user/user.services.yml b/core/modules/user/user.services.yml
index 29535b4..852a983 100644
--- a/core/modules/user/user.services.yml
+++ b/core/modules/user/user.services.yml
@@ -57,6 +57,8 @@ services:
   user.tempstore:
     class: Drupal\user\TempStoreFactory
     arguments: ['@serialization.phpserialize', '@database', '@lock', '%user.tempstore.expire%']
+    tags:
+      - { name: backend_overridable }
 
 parameters:
   user.tempstore.expire: 604800