diff --git a/drivers/qtn/topaz/switch_emac.c b/drivers/qtn/topaz/switch_emac.c
index 894fa89..a1cd80b 100644
--- a/drivers/qtn/topaz/switch_emac.c
+++ b/drivers/qtn/topaz/switch_emac.c
@@ -1126,7 +1126,13 @@
 	}
 
 	/* Allocate device structure */
-	sprintf(devname, "eth%d_emac%d", soc_id(), port_num);
+
+	if (port_num == 0)
+		strcpy(devname, "wan0");
+	else if (port_num == 1)
+		strcpy(devname, "lan0");
+	else
+		sprintf(devname, "eth%d_emac%d", soc_id(), port_num);
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4,7,0)
 	dev = alloc_netdev(sizeof(struct topaz_emac_priv), devname, NET_NAME_UNKNOWN, ether_setup);
 #else