diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-sysmocom.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-sysmocom.c
index ada801f..eb129da 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-sysmocom.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-sysmocom.c
@@ -106,7 +106,7 @@ static void __init sysmocom_sob_ap2_setup(void)
 	/* RJ45 port is separate WAN port / MAC, not switched with other ports */
 	ath79_setup_ar933x_phy4_switch(true, true);
 	ath79_init_mac(ath79_eth0_data.mac_addr, art + SYSMOCOM_MAC0_OFFSET, 0);
-	ath79_init_mac(ath79_eth1_data.mac_addr, art + SYSMOCOM_MAC1_OFFSET, 1);
+	ath79_init_mac(ath79_eth1_data.mac_addr, art + SYSMOCOM_MAC1_OFFSET, 0);
 	ath79_register_mdio(0, 0x0);
 	ath79_register_eth(0);
 	ath79_register_eth(1);