diff --git a/package/gluon-mesh-vpn-core/src/respondd.c b/package/gluon-mesh-vpn-core/src/respondd.c
index ed3019b8ed5cd6da5a48c51ff6e3360d1000000d..afe03330803634337053e4e88ac35f2c493ac416 100644
--- a/package/gluon-mesh-vpn-core/src/respondd.c
+++ b/package/gluon-mesh-vpn-core/src/respondd.c
@@ -1,25 +1,6 @@
-/*
-  Copyright (c) 2021, Aiyion <gluon@aiyionpri.me>
-  Copyright (c) 2016, Matthias Schiffer <mschiffer@universe-factory.net>
-  All rights reserved.
-  Redistribution and use in source and binary forms, with or without
-  modification, are permitted provided that the following conditions are met:
-    1. Redistributions of source code must retain the above copyright notice,
-       this list of conditions and the following disclaimer.
-    2. Redistributions in binary form must reproduce the above copyright notice,
-       this list of conditions and the following disclaimer in the documentation
-       and/or other materials provided with the distribution.
-  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
+/* SPDX-FileCopyrightText: 2021, Aiyion <gluon@aiyionpri.me> */
+/* SPDX-FileCopyrightText: 2016, Matthias Schiffer <mschiffer@universe-factory.net> */
+/* SPDX-License-Identifier: BSD-2-Clause */
 
 #include <respondd.h>