diff --git a/src/button.cxx b/src/button.cxx
index 9b9a1ca..a70aef4 100644
--- a/src/button.cxx
+++ b/src/button.cxx
@@ -1,7 +1,7 @@
 /*
  * This file is part of the planetblupi source code
  * Copyright (C) 1997, Daniel Roux & EPSITEC SA
- * Copyright (C) 2017-2018, Mathieu Schroeter
+ * Copyright (C) 2017-2019, Mathieu Schroeter
  * http://epsitec.ch; http://www.blupi.org; http://github.com/blupi-games
  *
  * This program is free software: you can redistribute it and/or modify
diff --git a/src/button.h b/src/button.h
index 5b5862b..912e4c5 100644
--- a/src/button.h
+++ b/src/button.h
@@ -1,7 +1,7 @@
 /*
  * This file is part of the planetblupi source code
  * Copyright (C) 1997, Daniel Roux & EPSITEC SA
- * Copyright (C) 2017, Mathieu Schroeter
+ * Copyright (C) 2017-2019, Mathieu Schroeter
  * http://epsitec.ch; http://www.blupi.org; http://github.com/blupi-games
  *
  * This program is free software: you can redistribute it and/or modify