diff --git a/apps/emqx/src/emqx_schema.erl b/apps/emqx/src/emqx_schema.erl
index 54740db61..21b2dd255 100644
--- a/apps/emqx/src/emqx_schema.erl
+++ b/apps/emqx/src/emqx_schema.erl
@@ -126,7 +126,8 @@ EMQ X can be configured with:
 <br>
 <ul>
 <li><code>[]</code>: The default value, it allows *ALL* logins</li>
-<li>one: For example <code>{enable:true,backend:\"built-in-database\",mechanism=\"password-based\"}</code></li>
+<li>one: For example <code>{enable:true,backend:\"built-in-database\",mechanism=\"password-based\"}
+</code></li>
 <li>chain: An array of structs.</li>
 </ul>
 <br>
@@ -1479,7 +1480,8 @@ authentication(Desc) ->
     %% the type checks are done in emqx_auth application when it boots.
     %% and in emqx_authentication_config module for rutime changes.
     Default = hoconsc:lazy(hoconsc:union([typerefl:map(), hoconsc:array(typerefl:map())])),
-    %% as the type is lazy, the runtime module injection from EMQX_AUTHENTICATION_SCHEMA_MODULE_PT_KEY
+    %% as the type is lazy, the runtime module injection
+    %% from EMQX_AUTHENTICATION_SCHEMA_MODULE_PT_KEY
     %% is for now only affecting document generation.
     %% maybe in the future, we can find a more straightforward way to support
     %% * document generation (at compile time)
diff --git a/apps/emqx_dashboard/src/emqx_dashboard.erl b/apps/emqx_dashboard/src/emqx_dashboard.erl
index b01695f13..953e3e52b 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard.erl
@@ -45,8 +45,8 @@ start_listeners() ->
         components => #{
             schemas => #{},
             'securitySchemes' => #{
-                basicAuth => #{type => http, scheme => basic},
-                bearerAuth => #{type => http, scheme => bearer}
+                'basicAuth' => #{type => http, scheme => basic},
+                'bearerAuth' => #{type => http, scheme => bearer}
             }}},
     Dispatch =
         case os:getenv("_EMQX_ENABLE_DASHBOARD") of
@@ -62,7 +62,7 @@ start_listeners() ->
         base_path => ?BASE_PATH,
         modules => minirest_api:find_api_modules(apps()),
         authorization => Authorization,
-        security => [#{basicAuth => []}, #{bearerAuth => []}],
+        security => [#{'basicAuth' => []}, #{'bearerAuth' => []}],
         swagger_global_spec => GlobalSpec,
         dispatch => Dispatch,
         middlewares => [cowboy_router, ?EMQX_MIDDLE, cowboy_handler]
diff --git a/apps/emqx_dashboard/src/emqx_dashboard_admin.erl b/apps/emqx_dashboard/src/emqx_dashboard_admin.erl
index 5a14d53e7..b3b97ad28 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard_admin.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard_admin.erl
@@ -115,11 +115,11 @@ hash(Password) ->
 
 verify_hash(Origin, SaltHash) ->
     case SaltHash of
-    <<Salt:4/binary, Hash/binary>> ->
-        case Hash =:= sha256(Salt, Origin) of
-            true -> ok;
-            false -> error
-        end;
+        <<Salt:4/binary, Hash/binary>> ->
+            case Hash =:= sha256(Salt, Origin) of
+                true -> ok;
+                false -> error
+            end;
         _ -> error
     end.
 
diff --git a/apps/emqx_dashboard/src/emqx_dashboard_api.erl b/apps/emqx_dashboard/src/emqx_dashboard_api.erl
index 5e233f165..45a3b7c56 100644
--- a/apps/emqx_dashboard/src/emqx_dashboard_api.erl
+++ b/apps/emqx_dashboard/src/emqx_dashboard_api.erl
@@ -123,7 +123,8 @@ schema("/users/:username") ->
                 #{in => path, example => <<"admin">>})}],
             'requestBody' => [
                 { description
-                , mk(emqx_schema:unicode_binary(), #{desc => <<"User description">>, example => <<"administrator">>})}
+                , mk(emqx_schema:unicode_binary(),
+                    #{desc => <<"User description">>, example => <<"administrator">>})}
             ],
             responses => #{
                 200 => mk( ref(?MODULE, user)
diff --git a/apps/emqx_management/src/emqx_mgmt_api_app.erl b/apps/emqx_management/src/emqx_mgmt_api_app.erl
index 47999b78d..fdf48b8c6 100644
--- a/apps/emqx_management/src/emqx_mgmt_api_app.erl
+++ b/apps/emqx_management/src/emqx_mgmt_api_app.erl
@@ -95,7 +95,7 @@ fields(app) ->
             #{desc => "No longer valid datetime",
                 example => <<"2021-12-05T02:01:34.186Z">>,
                 nullable => true
-                })},
+            })},
         {created_at, hoconsc:mk(emqx_schema:rfc3339_system_time(),
             #{desc => "ApiKey create datetime",
                 example => <<"2021-12-01T00:00:00.000Z">>
@@ -105,20 +105,20 @@ fields(app) ->
         {enable, hoconsc:mk(boolean(), #{desc => "Enable/Disable", nullable => true})}
     ];
 fields(name) ->
-  [{name, hoconsc:mk(binary(),
-      #{
-          desc => <<"[a-zA-Z0-9-_]">>,
-          example => <<"EMQX-API-KEY-1">>,
-          in => path,
-          validator => fun ?MODULE:validate_name/1
-          })}
-  ].
+    [{name, hoconsc:mk(binary(),
+        #{
+            desc => <<"[a-zA-Z0-9-_]">>,
+            example => <<"EMQX-API-KEY-1">>,
+            in => path,
+            validator => fun ?MODULE:validate_name/1
+        })}
+    ].
 
 -define(NAME_RE, "^[A-Za-z]+[A-Za-z0-9-_]*$").
 
 validate_name(Name) ->
     NameLen = byte_size(Name),
-    case  NameLen > 0 andalso NameLen =< 256 of
+    case NameLen > 0 andalso NameLen =< 256 of
         true ->
             case re:run(Name, ?NAME_RE) of
                 nomatch -> {error, "Name should be " ?NAME_RE};
@@ -131,7 +131,7 @@ delete(Keys, Fields) ->
     lists:foldl(fun(Key, Acc) -> lists:keydelete(Key, 1, Acc) end, Fields, Keys).
 
 api_key(get, _) ->
-    {200, [format(App) ||App <- emqx_mgmt_auth:list()]};
+    {200, [format(App) || App <- emqx_mgmt_auth:list()]};
 api_key(post, #{body := App}) ->
     #{
         <<"name">> := Name,