diff --git a/root/package/base-files/files/etc/board.d/99-default_network b/root/package/base-files/files/etc/board.d/99-default_network
index 55d5d79a..cd20419d 100644
--- a/root/package/base-files/files/etc/board.d/99-default_network
+++ b/root/package/base-files/files/etc/board.d/99-default_network
@@ -1,4 +1,3 @@
-#!/bin/sh
 #
 # Copyright (C) 2013-2015 OpenWrt.org
 #
@@ -10,7 +9,8 @@ board_config_update
 json_is_a network object && exit 0
 
 ucidef_set_interface_lan 'eth0'
+[ -d /sys/class/net/eth1 ] && ucidef_set_interface_wan 'eth1'
 
 board_config_flush
 
-exit 0
+exit 0
\ No newline at end of file