diff --git a/components/drivers/rtc/alarm.c b/components/drivers/rtc/alarm.c
index 17047baeb9725357d58c572cc9caeb41e10c480d..6036c3435381a8e388a8b562d9137438989c4cc0 100644
--- a/components/drivers/rtc/alarm.c
+++ b/components/drivers/rtc/alarm.c
@@ -380,7 +380,7 @@ void rt_alarm_update(rt_device_t dev, rt_uint32_t event)
     rt_event_send(&_container.event, 1);
 }
 
-/** \breif modify the alarm setup
+/** \brief modify the alarm setup
  *
  * \param alarm pointer to alarm
  * \param cmd control command