diff --git a/LICENSE b/LICENSE
index 8c53723..afda473 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2013-2018 tty-clock contributors
+Copyright (c) 2009-2018 tty-clock contributors
 Copyright (c) 2008-2009 Martin Duquesnoy <xorg62@gmail.com>
 All rights reserved.
 
diff --git a/ttyclock.c b/ttyclock.c
index 936ea4e..3c4d7ce 100644
--- a/ttyclock.c
+++ b/ttyclock.c
@@ -1,5 +1,6 @@
 /*
  *      TTY-CLOCK Main file.
+ *      Copyright © 2009-2018 tty-clock contributors
  *      Copyright © 2008 Martin Duquesnoy <xorg62@gmail.com>
  *      All rights reserved.
  *
diff --git a/ttyclock.h b/ttyclock.h
index dec099e..ba4081b 100644
--- a/ttyclock.h
+++ b/ttyclock.h
@@ -1,6 +1,7 @@
 /*
  *      TTY-CLOCK headers file.
- *      Copyright © 2008 Martin Duquesnoy <xorg62@gmail.com>
+ *      Copyright © 2009-2013 tty-clock contributors
+ *      Copyright © 2008-2009 Martin Duquesnoy <xorg62@gmail.com>
  *      All rights reserved.
  *
  *      Redistribution and use in source and binary forms, with or without