diff --git a/openwrt/package/switch/src/gpio.h b/openwrt/package/switch/src/gpio.h
index 8257600331..800ae25a9f 100644
--- a/openwrt/package/switch/src/gpio.h
+++ b/openwrt/package/switch/src/gpio.h
@@ -1,3 +1,10 @@
+/*
+ * Copyright (C) 2006 OpenWrt.org
+ *
+ * This is free software, licensed under the GNU General Public License v2.
+ * See /LICENSE for more information.
+ */
+
 #ifndef __GPIO_H
 #define __GPIO_H