--- a/scripts/signal/arch_fit.m
+++ b/scripts/signal/arch_fit.m
@@ -1,18 +1,21 @@
 ## Copyright (C) 1995, 1996, 1997  Kurt Hornik
 ##
-## This program is free software; you can redistribute it and/or modify
-## it under the terms of the GNU General Public License as published by
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
 ## the Free Software Foundation; either version 2, or (at your option)
 ## any later version.
 ##
-## This program is distributed in the hope that it will be useful, but
+## Octave is distributed in the hope that it will be useful, but
 ## WITHOUT ANY WARRANTY; without even the implied warranty of
 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 ## General Public License for more details.
 ##
 ## You should have received a copy of the GNU General Public License
-## along with this file.  If not, write to the Free Software Foundation,
-## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+## along with Octave; see the file COPYING.  If not, write to the Free
+## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+## 02111-1307, USA.
 
 ## -*- texinfo -*-
 ## @deftypefn {Function File} {[@var{a}, @var{b}] =} arch_fit (@var{y}, @var{x}, @var{p}, @var{iter}, @var{gamma}, @var{a0}, @var{b0})