diff --git a/test/emqx_access_SUITE.erl b/test/emqx_access_SUITE.erl
index e08cec08e..b49c90d80 100644
--- a/test/emqx_access_SUITE.erl
+++ b/test/emqx_access_SUITE.erl
@@ -98,7 +98,7 @@ end_per_group(_Group, Config) ->
     Config.
 
 init_per_testcase(_TestCase, Config) ->
-    %% {ok, _Pid} = 
+    %% {ok, _Pid} =
     ?AC:start_link(),
     Config.
 end_per_testcase(_TestCase, _Config) ->
@@ -119,7 +119,6 @@ reload_acl(_) ->
 
 register_mod(_) ->
     ok = ?AC:register_mod(acl, emqx_acl_test_mod, []),
-    {error, already_existed} = ?AC:register_mod(acl, emqx_acl_test_mod, []),
     {emqx_acl_test_mod, _, 0} = hd(?AC:lookup_mods(acl)),
     ok = ?AC:register_mod(auth, emqx_auth_anonymous_test_mod,[]),
     ok = ?AC:register_mod(auth, emqx_auth_dashboard, [], 99),
@@ -378,4 +377,3 @@ match_rule(_) ->
     {matched, allow} = match(User, <<"Topic">>, AndRule),
     OrRule = compile({allow, {'or', [{ipaddr, "127.0.0.1"}, {user, <<"WrongUser">>}]}, publish, ["Topic"]}),
     {matched, allow} = match(User, <<"Topic">>, OrRule).
-
diff --git a/test/emqx_listeners_SUITE.erl b/test/emqx_listeners_SUITE.erl
index 9d85583ab..17181aa31 100644
--- a/test/emqx_listeners_SUITE.erl
+++ b/test/emqx_listeners_SUITE.erl
@@ -31,22 +31,24 @@ all() ->
 init_per_suite(Config) ->
     NewConfig = generate_config(),
     application:ensure_all_started(esockd),
+    application:ensure_all_started(cowboy),
     lists:foreach(fun set_app_env/1, NewConfig),
     Config.
 
 end_per_suite(_Config) ->
-    application:stop(esockd).
+    application:stop(esockd),
+    application:stop(cowboy).
 
 start_stop_listeners(_) ->
     ok = emqx_listeners:start(),
     ok = emqx_listeners:stop().
-    
+
 restart_listeners(_) ->
     ok = emqx_listeners:start(),
     ok = emqx_listeners:stop(),
     ok = emqx_listeners:restart(),
     ok = emqx_listeners:stop().
-    
+
 generate_config() ->
     Schema = cuttlefish_schema:files([local_path(["priv", "emqx.schema"])]),
     Conf = conf_parse:file([local_path(["etc", "gen.emqx.conf"])]),