diff --git a/lib/filesystem.php b/lib/filesystem.php
index 4dfdbc719dc..583aa38c83c 100644
--- a/lib/filesystem.php
+++ b/lib/filesystem.php
@@ -370,7 +370,7 @@ class OC_Filesystem{
 		return self::basicOperation('fileatime',$path);
 	}
 	static public function touch($path, $mtime=null){
-		return self::$defaultInstance->touch($path, $mtime);
+		return self::basicOperation('touch',$path,array($mtime));
 	}
 	static public function file_get_contents($path){
 		return self::basicOperation('file_get_contents',$path,array('read'));