diff --git a/iopsys-ramips/base-files/lib/db/boards/EX400 b/iopsys-ramips/base-files/lib/db/boards/EX400
index bf2483815bb8a96d23cccf3b858ee97a51090b4e..0a55253b9482fb9e1281bfc53465ed3a36d383c5 100644
--- a/iopsys-ramips/base-files/lib/db/boards/EX400
+++ b/iopsys-ramips/base-files/lib/db/boards/EX400
@@ -11,6 +11,7 @@ config board 'board'
 	option ethernetPorts '2'
 	option ethernetPortNames 'LAN WAN'
 	option ethernetPortOrder 'eth0.1 eth0.2'
+	option ethernetSwitchPortOrder='1 0'
 	option ethernetLanPorts 'eth0.1'
 	option ethernetWanPort 'eth0.2'
 	option sx9512_i2c_device '/dev/i2c-0'