diff --git a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index 2ded261c88..718fd7555c 100644
--- a/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ar71xx/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -143,7 +143,7 @@ case "$FIRMWARE" in
 	archer-c5|\
 	archer-c7)
 		ath10kcal_extract "art" 20480 2116
-		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -2)
+		ath10kcal_patch_mac $(macaddr_add $(cat /sys/class/net/eth1/address) -1)
 		;;
 	nbg6616|\
 	nbg6716)
diff --git a/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7.c b/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7.c
index 287252780d..923ed28b4a 100644
--- a/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7.c
+++ b/target/linux/ar71xx/files/arch/mips/ath79/mach-archer-c7.c
@@ -212,8 +212,7 @@ static void __init common_setup(bool pcie_slot)
 	ath79_register_leds_gpio(-1, ARRAY_SIZE(archer_c7_leds_gpio),
 				 archer_c7_leds_gpio);
 
-	ath79_init_mac(tmpmac, mac, -1);
-	ath79_register_wmac(art + ARCHER_C7_WMAC_CALDATA_OFFSET, tmpmac);
+	ath79_register_wmac(art + ARCHER_C7_WMAC_CALDATA_OFFSET, mac);
 
 	if (pcie_slot) {
 		ath79_register_pci();