diff --git a/apps/grgsm_trx b/apps/grgsm_trx
index 128adab..eafc726 100755
--- a/apps/grgsm_trx
+++ b/apps/grgsm_trx
@@ -31,6 +31,7 @@
 
 COPYRIGHT = \
 	"Copyright (C) 2016-2017 by Vadim Yanitskiy <axilirator@gmail.com>\n" \
+	"Copyright (C) 2017 by Piotr Krysik <ptrkrysik@gmail.com>\n" \
 	"License GPLv2+: GNU GPL version 2 or later " \
 	"<http://gnu.org/licenses/gpl.html>\n" \
 	"This is free software: you are free to change and redistribute it.\n" \