diff --git a/lib/private/Files/Storage/Local.php b/lib/private/Files/Storage/Local.php
index 4eb9fb13deb3c..70cb2e0ccc423 100644
--- a/lib/private/Files/Storage/Local.php
+++ b/lib/private/Files/Storage/Local.php
@@ -409,7 +409,7 @@ public function getETag($path) {
 	 * @param string $targetInternalPath
 	 * @return bool
 	 */
-	public function copyFromStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath) {
+	public function copyFromStorage(\OCP\Files\Storage $sourceStorage, $sourceInternalPath, $targetInternalPath, $preserveMtime = false) {
 		if ($sourceStorage->instanceOfStorage('\OC\Files\Storage\Local')) {
 			/**
 			 * @var \OC\Files\Storage\Local $sourceStorage