diff --git a/draw.c b/draw.c
index 499e2f4..fdbb922 100644
--- a/draw.c
+++ b/draw.c
@@ -1,3 +1,21 @@
+/*
+ * Copyright 2011-2014 hasufell
+ *
+ * This file is part of a hasufell project.
+ *
+ * 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 2 of the License 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
 #include "types.h"
 
 #include <GL/glut.h>