diff --git a/airoha/base-files/lib/network/switch.sh b/airoha/base-files/lib/network/switch.sh
index 3a966bda6254d452f79061638ddec4cd3cee910a..788e5954fbf31eb8bafaa9897e8d7c50a82df8fe 100644
--- a/airoha/base-files/lib/network/switch.sh
+++ b/airoha/base-files/lib/network/switch.sh
@@ -12,9 +12,6 @@ tc3162_eth_portmap() {
 		eth0.[0-9])
 			wan_port=${WANDEV:5}
 		;;
-		ae_wan)
-			wan_port=0
-		;;
 	esac
 
 	if [ "$WANDEV" == "$(cat /sys/module/eth/parameters/wan_itf)" ]; then