diff --git a/src/drivers/stm32/drv_io_timer.c b/src/drivers/stm32/drv_io_timer.c
index ab12a332c2..a9f1526524 100644
--- a/src/drivers/stm32/drv_io_timer.c
+++ b/src/drivers/stm32/drv_io_timer.c
@@ -644,7 +644,6 @@ int io_timer_channel_init(unsigned channel, io_timer_channel_mode_t mode,
 
 	switch (mode) {
 
-	// intentional fallthrough
 	case IOTimerChanMode_OneShot:
 	case IOTimerChanMode_PWMOut:
 	case IOTimerChanMode_Trigger: