diff --git a/include/ucore/timers.h b/include/ucore/timers.h
index 4385298..00f1563 100644
--- a/include/ucore/timers.h
+++ b/include/ucore/timers.h
@@ -96,6 +96,8 @@ void uc_timers_init_ex(struct UCTimers *t, struct UCoreClock *uclock);
  * will be called when the timer expires, and the timer is removed from the engine
  * User is responsible for the lifetime and memory of the UCTimer, which must exist until
  * te timer is fired or removed.
+ * If the timer has previously been added, it will be removed first. So there
+ * is no need to call uc_timers_remove() to "re-schedule" a timer.
  *
  * @param timers timer engine to add timer to.
  * @param timer timer to add