diff --git a/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom b/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
index 2d1ac2e872..b68efcbba1 100644
--- a/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
+++ b/target/linux/ramips/mt7620/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
@@ -34,12 +34,12 @@ case "$FIRMWARE" in
 		wan_mac=$(jboot_config_read -m -i $(find_mtd_part "config") -o 0xE000)
 		wifi_mac=$(macaddr_add "$wan_mac" 1)
 		jboot_eeprom_extract "config" 0xE000
-		caldata_patch_mac $wifi_mac 0x4
+		caldata_patch_data "${wifi_mac//:/}" 0x4
 		;;
 	dovado,tiny-ac)
 		wifi_mac=$(mtd_get_mac_ascii u-boot-env INIC_MAC_ADDR)
 		caldata_extract "factory" 0x0 0x200
-		caldata_patch_mac $wifi_mac 0x4
+		caldata_patch_data "${wifi_mac//:/}" 0x4
 		;;
 	*)
 		caldata_die "Please define mtd-eeprom in $board DTS file!"