diff --git a/apps/emqx/test/emqx_channel_SUITE.erl b/apps/emqx/test/emqx_channel_SUITE.erl
index ce02f16c3..5653cd2d2 100644
--- a/apps/emqx/test/emqx_channel_SUITE.erl
+++ b/apps/emqx/test/emqx_channel_SUITE.erl
@@ -27,176 +27,6 @@
 all() ->
     emqx_common_test_helpers:all(?MODULE).
 
-force_gc_conf() ->
-    #{bytes => 16777216, count => 16000, enable => true}.
-
-force_shutdown_conf() ->
-    #{enable => true, max_heap_size => 4194304, max_mailbox_size => 1000}.
-
-rpc_conf() ->
-    #{
-        async_batch_size => 256,
-        authentication_timeout => 5000,
-        call_receive_timeout => 15000,
-        connect_timeout => 5000,
-        mode => async,
-        port_discovery => stateless,
-        send_timeout => 5000,
-        socket_buffer => 1048576,
-        socket_keepalive_count => 9,
-        socket_keepalive_idle => 900,
-        socket_keepalive_interval => 75,
-        socket_recbuf => 1048576,
-        socket_sndbuf => 1048576,
-        tcp_client_num => 1,
-        tcp_server_port => 5369
-    }.
-
-mqtt_conf() ->
-    #{
-        await_rel_timeout => 300000,
-        idle_timeout => 15000,
-        ignore_loop_deliver => false,
-        keepalive_backoff => 0.75,
-        max_awaiting_rel => 100,
-        max_clientid_len => 65535,
-        max_inflight => 32,
-        max_mqueue_len => 1000,
-        max_packet_size => 1048576,
-        max_qos_allowed => 2,
-        max_subscriptions => infinity,
-        max_topic_alias => 65535,
-        max_topic_levels => 128,
-        mqueue_default_priority => lowest,
-        mqueue_priorities => disabled,
-        mqueue_store_qos0 => true,
-        peer_cert_as_clientid => disabled,
-        peer_cert_as_username => disabled,
-        response_information => [],
-        retain_available => true,
-        retry_interval => 30000,
-        server_keepalive => disabled,
-        session_expiry_interval => 7200000,
-        shared_subscription => true,
-        strict_mode => false,
-        upgrade_qos => false,
-        use_username_as_clientid => false,
-        wildcard_subscription => true
-    }.
-
-listener_mqtt_tcp_conf() ->
-    #{
-        acceptors => 16,
-        zone => default,
-        access_rules => ["allow all"],
-        bind => {{0, 0, 0, 0}, 1883},
-        max_connections => 1024000,
-        mountpoint => <<>>,
-        proxy_protocol => false,
-        proxy_protocol_timeout => 3000,
-        tcp_options => #{
-            active_n => 100,
-            backlog => 1024,
-            buffer => 4096,
-            high_watermark => 1048576,
-            nodelay => false,
-            reuseaddr => true,
-            send_timeout => 15000,
-            send_timeout_close => true
-        }
-    }.
-
-listener_mqtt_ws_conf() ->
-    #{
-        acceptors => 16,
-        zone => default,
-        access_rules => ["allow all"],
-        bind => {{0, 0, 0, 0}, 8083},
-        max_connections => 1024000,
-        mountpoint => <<>>,
-        proxy_protocol => false,
-        proxy_protocol_timeout => 3000,
-        tcp_options =>
-            #{
-                active_n => 100,
-                backlog => 1024,
-                buffer => 4096,
-                high_watermark => 1048576,
-                nodelay => false,
-                reuseaddr => true,
-                send_timeout => 15000,
-                send_timeout_close => true
-            },
-        websocket =>
-            #{
-                allow_origin_absence => true,
-                check_origin_enable => false,
-                check_origins => [],
-                compress => false,
-                deflate_opts =>
-                    #{
-                        client_max_window_bits => 15,
-                        mem_level => 8,
-                        server_max_window_bits => 15
-                    },
-                fail_if_no_subprotocol => true,
-                idle_timeout => 86400000,
-                max_frame_size => infinity,
-                mqtt_path => "/mqtt",
-                mqtt_piggyback => multiple,
-                % should allow uppercase in config
-                proxy_address_header => "X-Forwarded-For",
-                proxy_port_header => "x-forwarded-port",
-                supported_subprotocols =>
-                    ["mqtt", "mqtt-v3", "mqtt-v3.1.1", "mqtt-v5"]
-            }
-    }.
-
-listeners_conf() ->
-    #{
-        tcp => #{default => listener_mqtt_tcp_conf()},
-        ws => #{default => listener_mqtt_ws_conf()}
-    }.
-
-limiter_conf() ->
-    Make = fun() ->
-        #{
-            burst => 0,
-            rate => infinity
-        }
-    end,
-
-    lists:foldl(
-        fun(Name, Acc) ->
-            Acc#{Name => Make()}
-        end,
-        #{},
-        [bytes, messages, message_routing, connection, internal]
-    ).
-
-stats_conf() ->
-    #{enable => true}.
-
-zone_conf() ->
-    #{}.
-
-basic_conf() ->
-    #{
-        force_gc => force_gc_conf(),
-        force_shutdown => force_shutdown_conf(),
-        mqtt => mqtt_conf(),
-        rpc => rpc_conf(),
-        stats => stats_conf(),
-        listeners => listeners_conf(),
-        zones => zone_conf(),
-        limiter => limiter_conf()
-    }.
-
-set_test_listener_confs() ->
-    Conf = emqx_config:get([], #{}),
-    emqx_config:put(basic_conf()),
-    Conf.
-
 %%--------------------------------------------------------------------
 %% CT Callbacks
 %%--------------------------------------------------------------------
@@ -242,14 +72,11 @@ init_per_testcase(_TestCase, Config) ->
         fun(_) -> {ok, #{is_superuser => false}} end
     ),
     ok = meck:expect(emqx_access_control, authorize, fun(_, _, _) -> allow end),
-    %% Set confs
-    OldConf = set_test_listener_confs(),
     emqx_common_test_helpers:start_apps([]),
-    [{config, OldConf} | Config].
+    Config.
 
 end_per_testcase(_TestCase, Config) ->
     meck:unload([emqx_access_control]),
-    emqx_config:put(?config(config, Config)),
     emqx_common_test_helpers:stop_apps([]),
     Config.
 
diff --git a/apps/emqx/test/emqx_connection_SUITE.erl b/apps/emqx/test/emqx_connection_SUITE.erl
index de3672bf3..ea451eea5 100644
--- a/apps/emqx/test/emqx_connection_SUITE.erl
+++ b/apps/emqx/test/emqx_connection_SUITE.erl
@@ -57,7 +57,6 @@ init_per_suite(Config) ->
     ok = meck:expect(emqx_alarm, deactivate, fun(_) -> ok end),
     ok = meck:expect(emqx_alarm, deactivate, fun(_, _) -> ok end),
 
-    emqx_channel_SUITE:set_test_listener_confs(),
     emqx_common_test_helpers:start_apps([]),
     Config.
 
diff --git a/apps/emqx/test/emqx_ws_connection_SUITE.erl b/apps/emqx/test/emqx_ws_connection_SUITE.erl
index bc91bc0ef..06be28a9c 100644
--- a/apps/emqx/test/emqx_ws_connection_SUITE.erl
+++ b/apps/emqx/test/emqx_ws_connection_SUITE.erl
@@ -137,7 +137,6 @@ end_per_testcase(_, Config) ->
     Config.
 
 init_per_suite(Config) ->
-    emqx_channel_SUITE:set_test_listener_confs(),
     emqx_common_test_helpers:start_apps([]),
     Config.