diff --git a/sw/airborne/common_nav.c b/sw/airborne/common_nav.c
index 3d6bc83d6f..0269ef5d00 100644
--- a/sw/airborne/common_nav.c
+++ b/sw/airborne/common_nav.c
@@ -1,3 +1,27 @@
+/*
+ * $Id$
+ *  
+ * Copyright (C) 2007-2009  ENAC, Pascal Brisset, Antoine Drouin
+ *
+ * This file is part of paparazzi.
+ *
+ * paparazzi 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.
+ *
+ * paparazzi 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 paparazzi; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 59 Temple Place - Suite 330,
+ * Boston, MA 02111-1307, USA. 
+ *
+ */
+
 #include "common_nav.h"
 #include "estimator.h"
 #include "flight_plan.h"