--- a/src/example_optiminterp.F90
+++ b/src/example_optiminterp.F90
@@ -1,22 +1,19 @@
-!  
-! Example for using the n-dimentional optimal interpolation Fortran module
-! Copyright (C) 2005 Alexander Barth <barth.alexander@gmail.com>
-!  
-! 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 the Free Software Foundation; either version 2
-! of the License, or (at your option) any later version.
-!  
-! This program 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 program; if not, see <http://www.gnu.org/licenses/>.
-!  
+!! Copyright (C) 2005 Alexander Barth <barth.alexander@gmail.com>
+!!
+!! 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 the Free Software
+!! Foundation; either version 3 of the License, or (at your option) any later
+!! version.
+!!
+!! This program 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 program; if not, see <http://www.gnu.org/licenses/>.
 
-! Author: Alexander Barth <barth.alexander@gmail.com>
+!! Example for using the n-dimentional optimal interpolation Fortran module
 
 program test_optiminterp
  use optimal_interpolation