diff --git a/apps/emqx_gateway/src/lwm2m/emqx_lwm2m_xml_object_db.erl b/apps/emqx_gateway/src/lwm2m/emqx_lwm2m_xml_object_db.erl
index 646fa26b5..c7e68d281 100644
--- a/apps/emqx_gateway/src/lwm2m/emqx_lwm2m_xml_object_db.erl
+++ b/apps/emqx_gateway/src/lwm2m/emqx_lwm2m_xml_object_db.erl
@@ -88,10 +88,7 @@ stop() ->
 init([]) ->
     _ = ets:new(?LWM2M_OBJECT_DEF_TAB, [set, named_table, protected]),
     _ = ets:new(?LWM2M_OBJECT_NAME_TO_ID_TAB, [set, named_table, protected]),
-    PluginsEtcDir = emqx:get_env(plugins_etc_dir),
-    DefBaseDir = re:replace(PluginsEtcDir, "plugins", "lwm2m_xml", [{return, list}]),
-    BaseDir = application:get_env(emqx_lwm2m, xml_dir, DefBaseDir),
-    load(BaseDir),
+    load(emqx_config:get([emqx_lwm2m, xml_dir])),
     {ok, #state{}}.
 
 handle_call(_Request, _From, State) ->
diff --git a/apps/emqx_modules/test/emqx_mod_telemetry_SUITE.erl b/apps/emqx_modules/test/emqx_mod_telemetry_SUITE.erl
index 1960ad4a7..1aaa2f3c7 100644
--- a/apps/emqx_modules/test/emqx_mod_telemetry_SUITE.erl
+++ b/apps/emqx_modules/test/emqx_mod_telemetry_SUITE.erl
@@ -37,15 +37,6 @@ init_per_suite(Config) ->
 end_per_suite(_Config) ->
     emqx_ct_helpers:stop_apps([emqx_modules]).
 
-set_special_configs(emqx_modules) ->
-    application:set_env(emqx, plugins_etc_dir,
-                        emqx_ct_helpers:deps_path(emqx_modules, "test")),
-    Conf = #{},
-    ok = file:write_file(filename:join(emqx:get_env(plugins_etc_dir), 'emqx_modules.conf'), jsx:encode(Conf)),
-    ok;
-set_special_configs(_App) ->
-    ok.
-
 t_uuid(_) ->
     UUID = emqx_mod_telemetry:generate_uuid(),
     Parts = binary:split(UUID, <<"-">>, [global, trim]),