diff --git a/firmware/config/boards/proteus/board.mk b/firmware/config/boards/proteus/board.mk
index b7ef740548..42e56ea4ad 100644
--- a/firmware/config/boards/proteus/board.mk
+++ b/firmware/config/boards/proteus/board.mk
@@ -32,7 +32,8 @@ ifeq ($(PROJECT_CPU),ARCH_STM32F4)
 	DDEFS += -DEFI_CONSOLE_TX_BRAIN_PIN=Gpio::D5 -DEFI_CONSOLE_RX_BRAIN_PIN=Gpio::D6
 endif
 
-DDEFS += -DOPENBLT_CAND=CAND1
+# CAND1
+DDEFS += -DBOOT_COM_CAN_CHANNEL_INDEX=0
 DDEFS += -DOPENBLT_CAN_RX_PORT=GPIOD
 DDEFS += -DOPENBLT_CAN_RX_PIN=0
 DDEFS += -DOPENBLT_CAN_TX_PORT=GPIOD