diff --git a/firmware/config/boards/hellen/hellen-common100.mk b/firmware/config/boards/hellen/hellen-common100.mk
index 993d601d53..142cf201f1 100644
--- a/firmware/config/boards/hellen/hellen-common100.mk
+++ b/firmware/config/boards/hellen/hellen-common100.mk
@@ -8,6 +8,6 @@ DDEFS += $(LED_CRITICAL_ERROR_BRAIN_PIN)
 
 
 
-DDEFS += -DHELLEN_BOARD_ID_PIN_1=Gpio::MM100_BOARD_ID2 -DHELLEN_BOARD_ID_PIN_2=Gpio::MM100_BOARD_ID1
+DDEFS += -DHELLEN_BOARD_ID_PIN_1=Gpio::MM100_BOARD_ID1 -DHELLEN_BOARD_ID_PIN_2=Gpio::MM100_BOARD_ID2
 
 include $(BOARDS_DIR)/hellen/hellen-common.mk
\ No newline at end of file