diff --git a/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata b/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
index 240a1bf1dd..562237f191 100644
--- a/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
+++ b/target/linux/ath79/base-files/etc/hotplug.d/firmware/11-ath10k-caldata
@@ -97,7 +97,7 @@ case "$FIRMWARE" in
 		;;
 	"tplink,tl-archer-c7-v2")
 		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)
 		;;
 	"ubnt,unifiac-lite"|\
 	"ubnt,unifiac-mesh"|\
diff --git a/target/linux/ath79/dts/qca9558_tl-archer-c7.dtsi b/target/linux/ath79/dts/qca9558_tl-archer-c7.dtsi
index 546a5e33c3..6fb25a9d2e 100644
--- a/target/linux/ath79/dts/qca9558_tl-archer-c7.dtsi
+++ b/target/linux/ath79/dts/qca9558_tl-archer-c7.dtsi
@@ -190,5 +190,4 @@
 	status = "okay";
 	mtd-cal-data = <&art 0x1000>;
 	mtd-mac-address = <&uboot 0x1fc00>;
-	mtd-mac-address-increment = <(-1)>;
 };