diff --git a/core/lib/Drupal/Core/PhpStorage/CoordinatedMTimeProtectedFileStorage.php b/core/lib/Drupal/Core/PhpStorage/CoordinatedMTimeProtectedFileStorage.php
index cd1bfb4..4924974 100644
--- a/core/lib/Drupal/Core/PhpStorage/CoordinatedMTimeProtectedFileStorage.php
+++ b/core/lib/Drupal/Core/PhpStorage/CoordinatedMTimeProtectedFileStorage.php
@@ -6,6 +6,7 @@
  */
 namespace Drupal\Core\PhpStorage;
 
+use Drupal\Component\PhpStorage\MTimeProtectedFileStorage;
 use Drupal\Core\Database\Database;
 
 /**
diff --git a/sites/default/default.settings.php b/sites/default/default.settings.php
index dd3ddc1..0e3953e 100644
--- a/sites/default/default.settings.php
+++ b/sites/default/default.settings.php
@@ -580,7 +580,7 @@
  * To use this backend, uncomment the following:
  */
 #$settings['php_storage']['service_container'] = array(
-#  'class' => 'Drupal\Component\PhpStorage\CoordinatedMTimeProtectedFileStorage',
+#  'class' => 'Drupal\Core\PhpStorage\CoordinatedMTimeProtectedFileStorage',
 #);
 
 /**