diff --git a/core/modules/user/src/Tests/UserFieldsTest.php b/core/modules/user/src/Tests/UserFieldsTest.php
index 48f5ff3..e32d6a9 100644
--- a/core/modules/user/src/Tests/UserFieldsTest.php
+++ b/core/modules/user/src/Tests/UserFieldsTest.php
@@ -48,7 +48,7 @@ function testUserFields() {
       'mail' => 'foobar@example.com',
     ]);
     $build = user_view($user);
-    $output = drupal_render($build);
+    $output = \Drupal::service('renderer')->render($build);
     $this->setRawContent($output);
     $userEmail = $user->getEmail();
     $this->assertText($userEmail, 'User\'s mail field is found in the twig template');
diff --git a/core/modules/user/tests/themes/user_test_theme/user.html.twig b/core/modules/user/tests/themes/user_test_theme/user.html.twig
index 717aa87..f6663db 100644
--- a/core/modules/user/tests/themes/user_test_theme/user.html.twig
+++ b/core/modules/user/tests/themes/user_test_theme/user.html.twig
@@ -1,7 +1,7 @@
 {#
 /**
  * @file
- * Default theme implementation to present all user data.
+ * Theme override for testing presence all user data.
  *
  * This template is used when viewing a registered user's page,
  * e.g., example.com/user/123. 123 being the user's ID.
@@ -19,8 +19,6 @@
  * - attributes: HTML attributes for the container element.
  *
  * @see template_preprocess_user()
- *
- * @ingroup themeable
  */
 #}
 <article{{ attributes.addClass('profile') }}>