diff --git a/core/modules/system/lib/Drupal/system/Controller/ThemeController.php b/core/modules/system/lib/Drupal/system/Controller/ThemeController.php
index 0a15010..3cde841 100644
--- a/core/modules/system/lib/Drupal/system/Controller/ThemeController.php
+++ b/core/modules/system/lib/Drupal/system/Controller/ThemeController.php
@@ -10,6 +10,7 @@
 use Drupal\Core\Config\Config;
 use Drupal\Core\Controller\ControllerInterface;
 use Drupal\Core\Routing\PathBasedGeneratorInterface;
+use Drupal\Core\StringTranslation\TranslationManager;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
@@ -52,6 +53,7 @@ class ThemeController implements ControllerInterface {
   public function __construct(Config $config, PathBasedGeneratorInterface $url_generator, TranslationManager $translation_manager) {
     $this->config = $config;
     $this->urlGenerator = $url_generator;
+    $this->translationManager = $translation_manager;
   }
 
   /**