diff --git a/Firmware/Makefile b/Firmware/Makefile
index d587105a..fb2a9115 100644
--- a/Firmware/Makefile
+++ b/Firmware/Makefile
@@ -46,7 +46,7 @@ erase_config:
 #  FLASH_CR = (1 << FLASH_CR_PG); // unlock flash memory
 #  [write OTP]
 write_otp:
-ifeq ($(ODRV_FACTORY),TRUE)
+ifeq ($(OTP_CONFIRM),TRUE)
 	# Data: 
 	openocd -f interface/stlink-v2.cfg -f target/stm32f4x.cfg \
 		-c init \
@@ -72,7 +72,7 @@ else
 	@echo " 1. open the Makefile and look at the write_otp target"
 	@echo " 2. understand the structure of the OTP"
 	@echo " 3. edit the bytes that are written to match your board version"
-	@echo "Run this command again, this time with ODRV_FACTORY=TRUE"
+	@echo "Run this command again, this time with OTP_CONFIRM=TRUE"
 endif
 
 clean: