diff --git a/src/drivers/boards/px4fmu-v1/board_config.h b/src/drivers/boards/px4fmu-v1/board_config.h
index 5957ce6fc5..2c14788ee6 100644
--- a/src/drivers/boards/px4fmu-v1/board_config.h
+++ b/src/drivers/boards/px4fmu-v1/board_config.h
@@ -182,6 +182,7 @@ __BEGIN_DECLS
 #define GPIO_TIM2_CH2OUT	GPIO_TIM2_CH2OUT_1
 #define GPIO_TIM2_CH3OUT	GPIO_TIM2_CH3OUT_1
 #define GPIO_TIM2_CH4OUT	GPIO_TIM2_CH4OUT_1
+#define DIRECT_PWM_OUTPUT_CHANNELS	4
 
 /* USB OTG FS
  *