diff --git a/src/drivers/boards/px4fmu-v4/board_config.h b/src/drivers/boards/px4fmu-v4/board_config.h
index 9c6584c4e5..97499d0136 100644
--- a/src/drivers/boards/px4fmu-v4/board_config.h
+++ b/src/drivers/boards/px4fmu-v4/board_config.h
@@ -268,7 +268,7 @@ __BEGIN_DECLS
 #define SPEKTRUM_RX_AS_UART()		px4_arch_configgpio(GPIO_USART1_RX)
 
 // FMUv4 has a separate GPIO for serial RC output
-#define GPIO_RC_OUT			(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_CLEAR|GPIO_PORTC|GPIO_PIN6)
+#define GPIO_RC_OUT			(GPIO_OUTPUT|GPIO_PUSHPULL|GPIO_SPEED_2MHz|GPIO_OUTPUT_SET|GPIO_PORTB|GPIO_PIN0)
 #define SPEKTRUM_RX_AS_GPIO()		px4_arch_configgpio(GPIO_RC_OUT)
 #define SPEKTRUM_RX_HIGH(_s)		px4_arch_gpiowrite(GPIO_RC_OUT, (_s))
 
diff --git a/src/drivers/px4fmu/fmu.cpp b/src/drivers/px4fmu/fmu.cpp
index 48fc9950d1..65c23423a8 100644
--- a/src/drivers/px4fmu/fmu.cpp
+++ b/src/drivers/px4fmu/fmu.cpp
@@ -1989,9 +1989,9 @@ PX4FMU::pwm_ioctl(file *filp, int cmd, unsigned long arg)
 		    arg == DSMX8_BIND_PULSES) {
 
 			dsm_bind(DSM_CMD_BIND_POWER_DOWN, 0);
-			usleep(500000);
 
 			dsm_bind(DSM_CMD_BIND_SET_RX_OUT, 0);
+			usleep(500000);
 
 			dsm_bind(DSM_CMD_BIND_POWER_UP, 0);
 			usleep(72000);