diff --git a/src/drivers/boards/px4fmu-v4/board_config.h b/src/drivers/boards/px4fmu-v4/board_config.h
index 4131666546..93f96277ce 100644
--- a/src/drivers/boards/px4fmu-v4/board_config.h
+++ b/src/drivers/boards/px4fmu-v4/board_config.h
@@ -238,7 +238,7 @@ __BEGIN_DECLS
 #define POWER_SPEKTRUM(_s)		stm32_gpiowrite(GPIO_SPEKTRUM_PWR_EN, (_s))
 #define GPIO_USART1_RX_SPEKTRUM		(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_SET|GPIO_PORTC|GPIO_PIN7)
 #define SPEKTRUM_RX_HIGH(_s)	stm32_gpiowrite(GPIO_USART1_RX_SPEKTRUM, (_s))
-#define SPEKTRUM_RX_AS_UART()		stm32_configgpio(GPIO_USART1_RX)		
+#define SPEKTRUM_RX_AS_UART()		stm32_configgpio(GPIO_USART1_RX)
 #define SPEKTRUM_RX_AS_GPIO()		stm32_configgpio(GPIO_USART1_RX_SPEKTRUM)
 
 /****************************************************************************************************