diff --git a/kernel/atomtimer.c b/kernel/atomtimer.c
index 25b4a7e..5a89890 100755
--- a/kernel/atomtimer.c
+++ b/kernel/atomtimer.c
@@ -454,6 +454,7 @@ static void atomTimerCallbacks (void)
             {
                 /* Add callback request to the list tail */
                 callback_list_tail->next_timer = next_ptr;
+                callback_list_tail = callback_list_tail->next_timer;
             }
 
             /* Mark this timer as the end of the callback list */