diff --git a/core/modules/system/src/Tests/Theme/ThemeTestCustomSettings.php b/core/modules/system/src/Tests/Theme/ThemeTestCustomSettings.php
index aca0555..5d1c5df 100644
--- a/core/modules/system/src/Tests/Theme/ThemeTestCustomSettings.php
+++ b/core/modules/system/src/Tests/Theme/ThemeTestCustomSettings.php
@@ -45,7 +45,7 @@ protected function getTestFile($type_name, $size = NULL) {
     $file = current($this->drupalGetTestFiles($type_name, $size));
 
     // Add a filesize property to files as would be read by
-    // \Drupal\file\Entity\File::load().
+    // File::load().
     $file->filesize = filesize($file->uri);
 
     return File::create((array) $file);