diff --git a/lib/private/Files/Mount/Manager.php b/lib/private/Files/Mount/Manager.php
index aad75e4925..ee52436653 100644
--- a/lib/private/Files/Mount/Manager.php
+++ b/lib/private/Files/Mount/Manager.php
@@ -25,6 +25,7 @@
 
 namespace OC\Files\Mount;
 
+use OC\Cache\CappedMemoryCache;
 use \OC\Files\Filesystem;
 use OCP\Files\Mount\IMountManager;
 use OCP\Files\Mount\IMountPoint;