diff --git a/python/demapping/gsm_bcch_ccch_demapper.py b/python/demapping/gsm_bcch_ccch_demapper.py
index e3ae041..5bafba7 100644
--- a/python/demapping/gsm_bcch_ccch_demapper.py
+++ b/python/demapping/gsm_bcch_ccch_demapper.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 # @file
-# @author Piotr Krysik <ptrkrysik@gmail.com>
+# @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com>
 # @section LICENSE
 #
 # Gr-gsm is free software; you can redistribute it and/or modify
diff --git a/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py b/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py
index 79841d2..7b6a04d 100644
--- a/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py
+++ b/python/demapping/gsm_bcch_ccch_sdcch4_demapper.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 # @file
-# @author Piotr Krysik <ptrkrysik@gmail.com>
+# @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com>
 # @section LICENSE
 #
 # Gr-gsm is free software; you can redistribute it and/or modify
diff --git a/python/demapping/gsm_sdcch8_demapper.py b/python/demapping/gsm_sdcch8_demapper.py
index f3e360f..3d3a5a0 100644
--- a/python/demapping/gsm_sdcch8_demapper.py
+++ b/python/demapping/gsm_sdcch8_demapper.py
@@ -1,7 +1,7 @@
 #!/usr/bin/env python2
 # -*- coding: utf-8 -*-
 # @file
-# @author Piotr Krysik <ptrkrysik@gmail.com>
+# @author (C) 2016 by Piotr Krysik <ptrkrysik@gmail.com>
 # @section LICENSE
 #
 # Gr-gsm is free software; you can redistribute it and/or modify