diff --git a/doc/app_notes/ap-client-two-sdr.md b/doc/app_notes/ap-client-two-sdr.md
index b31f712..52cafe3 100644
--- a/doc/app_notes/ap-client-two-sdr.md
+++ b/doc/app_notes/ap-client-two-sdr.md
@@ -1,5 +1,6 @@
 <!--
-SPDX-FileCopyrightText: 2019 Jiao Xianjun <putaoshu@msn.com>
+Author: Xianjun jiao
+SPDX-FileCopyrightText: 2019 UGent
 SPDX-License-Identifier: AGPL-3.0-or-later
 -->