diff --git a/src/emqx_auth_http.app.src b/src/emqx_auth_http.app.src
index ee01818..eaabdb3 100644
--- a/src/emqx_auth_http.app.src
+++ b/src/emqx_auth_http.app.src
@@ -3,7 +3,7 @@
   {vsn, "git"},
   {modules, []},
   {registered, [emqx_auth_http_sup]},
-  {applications, [kernel,stdlib,clique]},
+  {applications, [kernel,stdlib]},
   {mod, {emqx_auth_http_app, []}},
   {env, []},
   {licenses, ["Apache-2.0"]},
diff --git a/src/emqx_auth_http_app.erl b/src/emqx_auth_http_app.erl
index b171e60..104610b 100644
--- a/src/emqx_auth_http_app.erl
+++ b/src/emqx_auth_http_app.erl
@@ -35,7 +35,6 @@
 start(_StartType, _StartArgs) ->
     with_env(auth_req, fun load_auth_hook/1),
     with_env(acl_req,  fun load_acl_hook/1),
-    emqx_auth_http_cfg:register(),
     supervisor:start_link({local, ?MODULE}, ?MODULE, []).
 
 load_auth_hook(AuthReq) ->
@@ -60,8 +59,7 @@ load_acl_hook(AclReq) ->
 
 stop(_State) ->
     emqx:unhook('client.authenticate', fun emqx_auth_http:check/3),
-    emqx:unhook('client.check_acl', fun emqx_acl_http:check_acl/5),
-    emqx_auth_http_cfg:unregister().
+    emqx:unhook('client.check_acl', fun emqx_acl_http:check_acl/5).
 
 %%--------------------------------------------------------------------
 %% Dummy supervisor
diff --git a/src/emqx_auth_http_cfg.erl b/src/emqx_auth_http_cfg.erl
deleted file mode 100644
index 770a6cb..0000000
--- a/src/emqx_auth_http_cfg.erl
+++ /dev/null
@@ -1,96 +0,0 @@
-%%--------------------------------------------------------------------
-%% Copyright (c) 2019 EMQ Technologies Co., Ltd. All Rights Reserved.
-%%
-%% Licensed under the Apache License, Version 2.0 (the "License");
-%% you may not use this file except in compliance with the License.
-%% You may obtain a copy of the License at
-%%
-%%     http://www.apache.org/licenses/LICENSE-2.0
-%%
-%% Unless required by applicable law or agreed to in writing, software
-%% distributed under the License is distributed on an "AS IS" BASIS,
-%% WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-%% See the License for the specific language governing permissions and
-%% limitations under the License.
-%%--------------------------------------------------------------------
-
--module(emqx_auth_http_cfg).
-
--include("emqx_auth_http.hrl").
-
--export([ register/0
-        , unregister/0
-        ]).
-
-register() ->
-    clique_config:load_schema([code:priv_dir(?APP)], ?APP),
-    register_formatter(),
-    register_config().
-
-unregister() ->
-    unregister_formatter(),
-    unregister_config(),
-    clique_config:unload_schema(?APP).
-
-register_formatter() ->
-    [clique:register_formatter(
-       cuttlefish_variable:tokenize(Key), fun formatter_callback/2)
-         || Key <- keys()].
-
-formatter_callback([_, _, _], Params) ->
-    proplists:get_value(url, Params);
-formatter_callback([_, _, _, "params"], Params) ->
-    format(proplists:get_value(params, Params));
-formatter_callback([_, _, _, Key], Params) ->
-    proplists:get_value(list_to_atom(Key), Params).
-
-unregister_formatter() ->
-    [clique:unregister_formatter(cuttlefish_variable:tokenize(Key)) || Key <- keys()].
-
-register_config() ->
-    Keys = keys(),
-    [clique:register_config(Key , fun config_callback/2) || Key <- Keys],
-    clique:register_config_whitelist(Keys, ?APP).
-
-config_callback([_, _, Key0], Value) ->
-    Key = list_to_atom(Key0),
-    {ok, Env} = application:get_env(?APP, Key),
-    application:set_env(?APP, Key, lists:keyreplace(url, 1, Env, {url, Value})),
-    " successfully\n";
-config_callback([_, _, Key0, "params"], Value0) ->
-    Key = list_to_atom(Key0),
-    {ok, Env} = application:get_env(?APP, Key),
-    Value = [list_to_tuple(string:tokens(S, "=")) || S <- string:tokens(Value0, ",")],
-    application:set_env(?APP, Key, lists:keyreplace(params, 1, Env, {params, Value})),
-    " successfully\n";
-config_callback([_, _, Key0, Key1], Value) ->
-    Key2 = list_to_atom(Key0),
-    Key3 = list_to_atom(Key1),
-    {ok, Env} = application:get_env(?APP, Key2),
-    application:set_env(?APP, Key2, lists:keyreplace(Key3, 1, Env, {Key3, Value})),
-    " successfully\n".
-
-unregister_config() ->
-    Keys = keys(),
-    [clique:unregister_config(Key) || Key <- Keys],
-    clique:unregister_config_whitelist(Keys, ?APP).
-
-format(Params) ->
-    format(Params, "").
-format([{Key, Value}], Acc) ->
-    Acc ++ lists:concat([Key, "=", Value]);
-format([{Key, Value} | Params], Acc) ->
-    format(Params, Acc ++ lists:concat([Key, "=", Value, ","])).
-
-keys() ->
-    ["auth.http.auth_req",
-     "auth.http.auth_req.method",
-     "auth.http.auth_req.params",
-     "auth.http.super_req",
-     "auth.http.super_req.method",
-     "auth.http.super_req.params",
-     "auth.http.acl_req",
-     "auth.http.acl_req.method",
-     "auth.http.acl_req.params"
-    ].
-