diff --git a/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php b/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
index b384021..ab4669b 100644
--- a/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
+++ b/core/tests/Drupal/Tests/Core/Render/Element/HtmlTagTest.php
@@ -9,6 +9,7 @@
 
 use Drupal\Tests\UnitTestCase;
 use Drupal\Core\Render\Element\HtmlTag;
+use Drupal\Component\Utility\SafeMarkup;
 
 /**
  * @coversDefaultClass \Drupal\Core\Render\Element\HtmlTag