diff -u b/core/lib/Drupal/Core/Theme/ThemeAccessCheck.php b/core/lib/Drupal/Core/Theme/ThemeAccessCheck.php
--- b/core/lib/Drupal/Core/Theme/ThemeAccessCheck.php
+++ b/core/lib/Drupal/Core/Theme/ThemeAccessCheck.php
@@ -56,7 +56,7 @@
    *   TRUE if the theme is installed, FALSE otherwise.
    */
   public function checkAccess($theme) {
-    $themes = \Drupal::service('theme_handler')->listInfo();
+    $themes = $this->themeHandler->listInfo();
     return !empty($themes[$theme]->status);
   }