diff --git a/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom b/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
index 0e02177f70..4c8beac066 100644
--- a/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
+++ b/target/linux/ramips/base-files/etc/hotplug.d/firmware/10-rt2x00-eeprom
@@ -58,7 +58,7 @@ case "$FIRMWARE" in
 		rt2x00_eeprom_extract "factory" 32768 512
 		;;
 	tiny-ac)
-		local wifi_mac=$(mtd_get_mac_ascii u-boot-env INIC_MAC_ADDR)
+		wifi_mac=$(mtd_get_mac_ascii u-boot-env INIC_MAC_ADDR)
 		rt2x00_eeprom_extract "factory" 0 512
 		rt2x00_eeprom_set_macaddr $wifi_mac
 		;;