diff --git a/gameoflife.cpp b/gameoflife.cpp
index 36b742d..a5e6edc 100644
--- a/gameoflife.cpp
+++ b/gameoflife.cpp
@@ -1,3 +1,24 @@
+/* GameOfLife - Conway's Game of Life in 3D
+ *
+ *      Copyright (c) 2008 by Sebastian Lohff, seba@seba-geek.de
+ *      http://www.seba-geek.de
+ *
+ *  This file is part of GameOfLife.
+ *
+ *  GameOfLife 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.
+ *
+ *  GameOfLife 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 GameOfLife.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "gameoflife.h"
 
 GameOfLife::GameOfLife(int _x, int _y) {
diff --git a/gameoflife.h b/gameoflife.h
index 1895eab..24e71a2 100644
--- a/gameoflife.h
+++ b/gameoflife.h
@@ -1,3 +1,24 @@
+/* GameOfLife - Conway's Game of Life in 3D
+ *
+ *      Copyright (c) 2008 by Sebastian Lohff, seba@seba-geek.de
+ *      http://www.seba-geek.de
+ *
+ *  This file is part of GameOfLife.
+ *
+ *  GameOfLife 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.
+ *
+ *  GameOfLife 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 GameOfLife.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #ifndef __GAMEOFLIFE_H
 #define __GAMEOFLIFE_H
 
diff --git a/life.cpp b/life.cpp
index db27038..2e8d003 100644
--- a/life.cpp
+++ b/life.cpp
@@ -1,3 +1,24 @@
+/* GameOfLife - Conway's Game of Life in 3D
+ *
+ *      Copyright (c) 2008 by Sebastian Lohff, seba@seba-geek.de
+ *      http://www.seba-geek.de
+ *
+ *  This file is part of GameOfLife.
+ *
+ *  GameOfLife 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.
+ *
+ *  GameOfLife 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 GameOfLife.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include <iostream>
 #include <sstream>
 #include <string>