diff --git a/core/modules/user/src/Tests/UserFieldsTest.php b/core/modules/user/src/Tests/UserFieldsTest.php
index e32d6a9..f698937 100644
--- a/core/modules/user/src/Tests/UserFieldsTest.php
+++ b/core/modules/user/src/Tests/UserFieldsTest.php
@@ -22,7 +22,7 @@ class UserFieldsTest extends KernelTestBase {
    *
    * @var array
    */
-  public static $modules = array('user', 'system');
+  public static $modules = ['user', 'system'];
 
   /**
    * {@inheritdoc}
@@ -51,6 +51,6 @@ function testUserFields() {
     $output = \Drupal::service('renderer')->render($build);
     $this->setRawContent($output);
     $userEmail = $user->getEmail();
-    $this->assertText($userEmail, 'User\'s mail field is found in the twig template');
+    $this->assertText($userEmail, "User's mail field is found in the twig template");
   }
 }