diff --git a/core/modules/language/lib/Drupal/language/Form/AdminDeleteForm.php b/core/modules/language/lib/Drupal/language/Form/AdminDeleteForm.php
index 3084a9b..99e5972 100644
--- a/core/modules/language/lib/Drupal/language/Form/AdminDeleteForm.php
+++ b/core/modules/language/lib/Drupal/language/Form/AdminDeleteForm.php
@@ -8,15 +8,18 @@
 namespace Drupal\language\Form;
 
 use Drupal\Core\Form\ConfirmFormBase;
+use Drupal\Core\Controller\ControllerInterface;
 use Drupal\core\Language\Language;
 use Symfony\Component\HttpKernel\Exception\NotFoundHttpException;
 use Symfony\Component\HttpFoundation\Request;
+use Drupal\Core\Routing\PathBasedGeneratorInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
+use Symfony\Component\DependencyInjection\ContainerInterface;
 
 /**
  * Defines a confirmation form for language deletion.
  */
-class AdminDeleteForm extends ConfirmFormBase {
+class AdminDeleteForm extends ConfirmFormBase implements ControllerInterface {
 
   /**
    * The language to be deleted.
@@ -25,6 +28,19 @@ class AdminDeleteForm extends ConfirmFormBase {
    */
   protected $language;
 
+  protected $urlGenerator;
+
+  public function __construct(PathBasedGeneratorInterface $url_generator = NULL) {
+    $this->urlGenerator = $url_generator;
+  }
+
+
+  public static function create(ContainerInterface $container) {
+    return new static(
+      $container->get('url_generator')
+    );
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -70,8 +86,9 @@ public function buildForm(array $form, array &$form_state, $language = NULL, Req
 
     if (language_default()->langcode == $langcode) {
       drupal_set_message(t('The default language cannot be deleted.'));
+      $url = $this->urlGenerator->generateFromPath('admin/config/regional/language', array('absolute' => TRUE));
 
-      return new RedirectResponse(url('admin/config/regional/language', array('absolute' => TRUE)));
+      return new RedirectResponse($url);
 
     }