diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index ba9f7fb7b6..290069f4d3 100755
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -44,10 +44,10 @@ ramips_setup_interfaces()
 		ucidef_set_interfaces_lan_wan "lan2 lan3 lan4 lan5" "wan"
 		;;
 	ubnt,edgerouter-x)
-		ucidef_set_interface_lan "eth0 eth1 eth2 eth3 eth4"
+		ucidef_set_interface_lan_wan "eth1 eth2 eth3 eth4" "eth0"
 		;;
 	ubnt,edgerouter-x-sfp)
-		ucidef_set_interface_lan "eth0 eth1 eth2 eth3 eth4 eth5"
+		ucidef_set_interface_lan_wan "eth1 eth2 eth3 eth4 eth5" "eth0"
 		;;
 	*)
 		ucidef_set_interfaces_lan_wan "lan1 lan2 lan3 lan4" "wan"