diff --git a/lib/private/files/cache/cache.php b/lib/private/files/cache/cache.php
index fc2d965d7f9..824f54de21f 100644
--- a/lib/private/files/cache/cache.php
+++ b/lib/private/files/cache/cache.php
@@ -140,6 +140,7 @@ class Cache {
 			$data['fileid'] = (int)$data['fileid'];
 			$data['size'] = (int)$data['size'];
 			$data['mtime'] = (int)$data['mtime'];
+			$data['storage_mtime'] = (int)$data['storage_mtime'];
 			$data['encrypted'] = (bool)$data['encrypted'];
             $data['unencrypted_size'] = (int)$data['unencrypted_size'];
 			$data['storage'] = $this->storageId;