diff --git a/server/ftp/fsup.go b/server/ftp/fsup.go
index 3042a3d2cea..356522712d5 100644
--- a/server/ftp/fsup.go
+++ b/server/ftp/fsup.go
@@ -87,5 +87,7 @@ func (f *FileUploadProxy) Close() error {
 		WebPutAsTask: false,
 	}
 	s.SetTmpFile(f.buffer)
-	return fs.PutDirectly(f.ctx, dir, s, true)
+	s.Closers.Add(f.buffer)
+	_, err = fs.PutAsTask(f.ctx, dir, s)
+	return err
 }