diff --git a/core/modules/system/src/Tests/Menu/AssertMenuActiveTrailTrait.php b/core/modules/system/src/Tests/Menu/AssertMenuActiveTrailTrait.php
index 37ab35f..759c0ad 100644
--- a/core/modules/system/src/Tests/Menu/AssertMenuActiveTrailTrait.php
+++ b/core/modules/system/src/Tests/Menu/AssertMenuActiveTrailTrait.php
@@ -7,6 +7,7 @@
 
 namespace Drupal\system\Tests\Menu;
 
+use Drupal\Component\Utility\SafeMarkup;
 use Drupal\Core\Url;
 
 /**