diff --git a/core/modules/user/src/Theme/AdminNegotiator.php b/core/modules/user/src/Theme/AdminNegotiator.php
index 99331b3..5be4662 100644
--- a/core/modules/user/src/Theme/AdminNegotiator.php
+++ b/core/modules/user/src/Theme/AdminNegotiator.php
@@ -73,6 +73,7 @@ public function __construct(AccountInterface $user, ConfigFactoryInterface $conf
     $this->configFactory = $config_factory;
     $this->entityManager = $entity_manager;
     $this->adminContext = $admin_context;
+    $this->routeMatch = $route_match;
   }
 
   /**
diff --git a/core/modules/user/user.services.yml b/core/modules/user/user.services.yml
index 1e8f9b3..13fac1d 100644
--- a/core/modules/user/user.services.yml
+++ b/core/modules/user/user.services.yml
@@ -42,7 +42,7 @@ services:
       - { name: event_subscriber }
   theme.negotiator.admin_theme:
     class: Drupal\user\Theme\AdminNegotiator
-    arguments: ['@current_user', '@config.factory', '@entity.manager', '@router.admin_context']
+    arguments: ['@current_user', '@config.factory', '@entity.manager', '@router.admin_context', '@current_route_match']
     tags:
       - { name: theme_negotiator, priority: -40 }
   user.permissions_hash: