diff --git a/core/includes/updater.inc b/core/includes/updater.inc
index d4f99e9..366c987 100644
--- a/core/includes/updater.inc
+++ b/core/includes/updater.inc
@@ -224,7 +224,7 @@ class Updater {
 
       // Take a Backup.
       if ($args['make_backup']) {
-        $this->makeBackup($args['install_dir'], $args['backup_dir']);
+        $this->makeBackup($filetransfer, $args['install_dir'], $args['backup_dir']);
       }
 
       if (!$this->name) {