diff --git a/misc/chkdef.cmd b/misc/chkdef.cmd
index fa91dce..a80230d 100644
--- a/misc/chkdef.cmd
+++ b/misc/chkdef.cmd
@@ -1,5 +1,6 @@
 /****************************************************************************
- * Copyright (c) 1998,2006 Free Software Foundation, Inc.                   *
+ * Copyright 2020 Thomas E. Dickey                                          *
+ * Copyright 1998,2006 Free Software Foundation, Inc.                       *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
  * copy of this software and associated documentation files (the            *
@@ -27,7 +28,7 @@
  ****************************************************************************/
 
 /*
- * $Id: chkdef.cmd,v 1.3 2006/04/22 23:14:50 tom Exp $
+ * $Id: chkdef.cmd,v 1.4 2020/02/02 23:34:34 tom Exp $
  *
  * Author:  Juan Jose Garcia Ripoll <worm@arrakis.es>.
  * Webpage: http://www.arrakis.es/~worm/