diff -u b/core/modules/system/lib/Drupal/system/Controller/ThemeListingController.php b/core/modules/system/lib/Drupal/system/Controller/ThemeListingController.php
--- b/core/modules/system/lib/Drupal/system/Controller/ThemeListingController.php
+++ b/core/modules/system/lib/Drupal/system/Controller/ThemeListingController.php
@@ -10,7 +10,7 @@
 use Drupal\Core\Controller\ControllerInterface;
 use Drupal\Core\Config\Config;
 use Drupal\Core\Extension\ModuleHandlerInterface;
-use Drupal\Core\StringTranslation\TranslationManager;
+use Drupal\Core\StringTranslation\TranslationInterface;
 use Drupal\Core\Access\CsrfTokenGenerator;
 use Symfony\Component\DependencyInjection\ContainerInterface;
 use Symfony\Component\HttpFoundation\Request;
@@ -37,7 +37,7 @@
   /**
    * The translation service.
    *
-   * @var \Drupal\Core\StringTranslation\TranslationManager
+   * @var \Drupal\Core\StringTranslation\TranslationInterface
    */
   protected $translation;
 
@@ -55,12 +55,12 @@
    *  The system.theme config object.
    * @param \Drupal\Core\Extension\ModuleHandlerInterface $module_handler
    *  The module handler service.
-   * @param \Drupal\Core\StringTranslation\TranslationManager $translation
+   * @param \Drupal\Core\StringTranslation\TranslationInterface $translation
    *  The translation manager service.
    * @param \Drupal\Core\Access\CsrfTokenGenerator
    *  The Csrf token generator.
    */
-  public function __construct(Config $config, ModuleHandlerInterface $module_handler, TranslationManager $translation, CsrfTokenGenerator $token_generator) {
+  public function __construct(Config $config, ModuleHandlerInterface $module_handler, TranslationInterface $translation, CsrfTokenGenerator $token_generator) {
     $this->config = $config;
     $this->moduleHandler = $module_handler;
     $this->translation = $translation;