--- a/pytouhou/utils/interpolator.py
+++ b/pytouhou/utils/interpolator.py
@@ -1,3 +1,18 @@
+# -*- encoding: utf-8 -*-
+##
+## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.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; version 3 only.
+##
+## 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.
+##
+
+
 class Interpolator(object):
     def __init__(self, values=()):
         self.values = tuple(values)