diff --git a/core/modules/system/tests/themes/test_theme_settings/theme-settings.php b/core/modules/system/tests/themes/test_theme_settings/theme-settings.php
index e82825e..588900a 100644
--- a/core/modules/system/tests/themes/test_theme_settings/theme-settings.php
+++ b/core/modules/system/tests/themes/test_theme_settings/theme-settings.php
@@ -1,5 +1,10 @@
 <?php
 
+/**
+ * @file
+ * Test to ensure theme compatibility with managed files.
+ */
+
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\file\Entity\File;
 
diff --git a/core/modules/system/tests/themes/test_theme_theme/test_theme_theme.theme b/core/modules/system/tests/themes/test_theme_theme/test_theme_theme.theme
index 00f214a..2b06906 100644
--- a/core/modules/system/tests/themes/test_theme_theme/test_theme_theme.theme
+++ b/core/modules/system/tests/themes/test_theme_theme/test_theme_theme.theme
@@ -1,5 +1,10 @@
 <?php
 
+/**
+ * @file
+ * Test to ensure theme compatibility with managed files.
+ */
+
 use Drupal\Core\Form\FormStateInterface;
 use Drupal\file\Entity\File;