diff --git a/src/drivers/stm32/drv_hrt.c b/src/drivers/stm32/drv_hrt.c
index cec0c49ffd..fd63681e30 100644
--- a/src/drivers/stm32/drv_hrt.c
+++ b/src/drivers/stm32/drv_hrt.c
@@ -330,7 +330,7 @@ static void		hrt_call_invoke(void);
 /*
  * PPM decoder tuning parameters
  */
-# define PPM_MAX_PULSE_WIDTH	500		/* maximum width of a pulse */
+# define PPM_MAX_PULSE_WIDTH	550		/* maximum width of a valid pulse */
 # define PPM_MIN_CHANNEL_VALUE	800		/* shortest valid channel signal */
 # define PPM_MAX_CHANNEL_VALUE	2200		/* longest valid channel signal */
 # define PPM_MIN_START		2500		/* shortest valid start gap */