diff --git a/apps/emqx_rule_engine/test/emqx_rule_monitor_SUITE.erl b/apps/emqx_rule_engine/test/emqx_rule_monitor_SUITE.erl
index 646f2644f..1d42cacb4 100644
--- a/apps/emqx_rule_engine/test/emqx_rule_monitor_SUITE.erl
+++ b/apps/emqx_rule_engine/test/emqx_rule_monitor_SUITE.erl
@@ -40,6 +40,8 @@ groups() ->
     ].
 
 init_per_suite(Config) ->
+    %% ensure alarm_handler started
+    {ok, _} = application:ensure_all_started(sasl),
     ok = ekka_mnesia:start(),
     ok = emqx_rule_registry:mnesia(boot),
     Config.