diff --git a/drivers/at86rf231/at86rf231_rx.c b/drivers/at86rf231/at86rf231_rx.c
index 2c2dd28bf6..cfa70cc76a 100644
--- a/drivers/at86rf231/at86rf231_rx.c
+++ b/drivers/at86rf231/at86rf231_rx.c
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
 
 #include "at86rf231.h"
 #include "at86rf231_arch.h"
diff --git a/drivers/at86rf231/at86rf231_spi.c b/drivers/at86rf231/at86rf231_spi.c
index 02322167a8..71bf94bb89 100644
--- a/drivers/at86rf231/at86rf231_spi.c
+++ b/drivers/at86rf231/at86rf231_spi.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
 #include "at86rf231_spi.h"
 #include "at86rf231_arch.h"
 #include "at86rf231.h"
diff --git a/drivers/at86rf231/at86rf231_tx.c b/drivers/at86rf231/at86rf231_tx.c
index e7af47b351..83eebbe635 100644
--- a/drivers/at86rf231/at86rf231_tx.c
+++ b/drivers/at86rf231/at86rf231_tx.c
@@ -1,3 +1,11 @@
+/*
+ * Copyright (C) 2014 INRIA
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser General
+ * Public License. See the file LICENSE in the top level directory for more
+ * details.
+ */
+
 #include "at86rf231.h"
 #include "at86rf231_arch.h"
 #include "at86rf231_spi.h"