diff --git a/firmware/config/boards/proteus/board.mk b/firmware/config/boards/proteus/board.mk
index eb54ff472e..0cc52f5ef5 100644
--- a/firmware/config/boards/proteus/board.mk
+++ b/firmware/config/boards/proteus/board.mk
@@ -24,7 +24,7 @@ ifneq ($(PROJECT_CPU),ARCH_STM32H7)
 	DDEFS += -DEFI_SOFTWARE_KNOCK=TRUE
 endif
 
-# disable hardware serial ports on H7
+# serial ports only on F4
 ifeq ($(PROJECT_CPU),ARCH_STM32F4)
 	# Hardware serial port on UART 2 -> PD5/PD6
 	DDEFS += -DSTM32_UART_USE_USART2=TRUE