diff --git a/src/emqx_kernel_sup.erl b/src/emqx_kernel_sup.erl
index 96dde598c..25e96b930 100644
--- a/src/emqx_kernel_sup.erl
+++ b/src/emqx_kernel_sup.erl
@@ -26,7 +26,7 @@ start_link() ->
 init([]) ->
     {ok, {{one_for_one, 10, 100},
           [child_spec(emqx_pool, supervisor),
-           child_spec(emqx_alarm, worker),
+           child_spec(emqx_alarm_mgr, worker),
            child_spec(emqx_hooks, worker),
            child_spec(emqx_stats, worker),
            child_spec(emqx_metrics, worker),