diff --git a/core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTplPhpAttributesTest.php b/core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTwigAttributesTest.php
similarity index 95%
rename from core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTplPhpAttributesTest.php
rename to core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTwigAttributesTest.php
index a9fa03d..fb26da6 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTplPhpAttributesTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Theme/HtmlTwigAttributesTest.php
@@ -2,7 +2,7 @@
 
 /**
  * @file
- * Contains Drupal\system\Tests\Theme\HtmlTwigAttributesTest.
+ * Contains \Drupal\system\Tests\Theme\HtmlTwigAttributesTest.
  */
 
 namespace Drupal\system\Tests\Theme;