diff --git a/include/grgsm/demapping/tch_f_chans_demapper.h b/include/grgsm/demapping/tch_f_chans_demapper.h
index cdd7457..c04c749 100644
--- a/include/grgsm/demapping/tch_f_chans_demapper.h
+++ b/include/grgsm/demapping/tch_f_chans_demapper.h
@@ -1,7 +1,7 @@
 /* -*- c++ -*- */
 /*
  * @file
- * @author Roman Khassraf <rkhassraf@gmail.com>
+ * @author (C) 2015 by Roman Khassraf <rkhassraf@gmail.com>
  * @section LICENSE
  *
  * Gr-gsm is free software; you can redistribute it and/or modify
diff --git a/include/grgsm/demapping/universal_ctrl_chans_demapper.h b/include/grgsm/demapping/universal_ctrl_chans_demapper.h
index 34bcafd..0e614d4 100644
--- a/include/grgsm/demapping/universal_ctrl_chans_demapper.h
+++ b/include/grgsm/demapping/universal_ctrl_chans_demapper.h
@@ -1,7 +1,7 @@
 /* -*- c++ -*- */
 /*
  * @file
- * @author Piotr Krysik <ptrkrysik@gmail.com>
+ * @author (C) 2014-2016 by Piotr Krysik <ptrkrysik@gmail.com>
  * @section LICENSE
  *
  * Gr-gsm is free software; you can redistribute it and/or modify