diff --git a/firmware/libboard/simtrace/source/board_simtrace.c b/firmware/libboard/simtrace/source/board_simtrace.c
index 90bf9bc..9d323cf 100644
--- a/firmware/libboard/simtrace/source/board_simtrace.c
+++ b/firmware/libboard/simtrace/source/board_simtrace.c
@@ -1,6 +1,22 @@
-/* SIMtrace specific application code */
-/* (C) 2017 by Harald Welte <laforge@gnumonks.org> */
-
+/* SIMtrace with SAM3S specific application code
+ *
+ * (C) 2017 by Harald Welte <laforge@gnumonks.org>
+ * (C) 2018 by sysmocom -s.f.m.c. GmbH, Author: Kevin Redon <kredon@sysmocom.de>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA
+ */
 #include "board.h"
 #include "simtrace.h"
 #include "utils.h"