diff --git a/apps/emqx_exhook/src/emqx_exhook_handler.erl b/apps/emqx_exhook/src/emqx_exhook_handler.erl
index cb0f2467e..fea7e8b9a 100644
--- a/apps/emqx_exhook/src/emqx_exhook_handler.erl
+++ b/apps/emqx_exhook/src/emqx_exhook_handler.erl
@@ -62,6 +62,8 @@
         , call_fold/3
         ]).
 
+-elvis([{elvis_style, god_modules, disable}]).
+
 %%--------------------------------------------------------------------
 %% Clients
 %%--------------------------------------------------------------------
@@ -340,11 +342,7 @@ merge_responsed_bool(_Req, #{type := 'IGNORE'}) ->
     ignore;
 merge_responsed_bool(Req, #{type := Type, value := {bool_result, NewBool}})
   when is_boolean(NewBool) ->
-    NReq = Req#{result => NewBool},
-    case Type of
-        'CONTINUE' -> {ok, NReq};
-        'STOP_AND_RETURN' -> {stop, NReq}
-    end;
+    {ret(Type), Req#{result => NewBool}};
 merge_responsed_bool(_Req, Resp) ->
     ?SLOG(warning, #{msg => "unknown_responsed_value", resp => Resp}),
     ignore.
@@ -352,11 +350,10 @@ merge_responsed_bool(_Req, Resp) ->
 merge_responsed_message(_Req, #{type := 'IGNORE'}) ->
     ignore;
 merge_responsed_message(Req, #{type := Type, value := {message, NMessage}}) ->
-    NReq = Req#{message => NMessage},
-    case Type of
-        'CONTINUE' -> {ok, NReq};
-        'STOP_AND_RETURN' -> {stop, NReq}
-    end;
+    {ret(Type), Req#{message => NMessage}};
 merge_responsed_message(_Req, Resp) ->
     ?SLOG(warning, #{msg => "unknown_responsed_value", resp => Resp}),
     ignore.
+
+ret('CONTINUE') -> ok;
+ret('STOP_AND_RETURN') -> stop.
diff --git a/apps/emqx_exhook/src/emqx_exhook_mngr.erl b/apps/emqx_exhook/src/emqx_exhook_mngr.erl
index d91652904..cd2658f93 100644
--- a/apps/emqx_exhook/src/emqx_exhook_mngr.erl
+++ b/apps/emqx_exhook/src/emqx_exhook_mngr.erl
@@ -141,7 +141,7 @@ load_all_servers(Servers, ReqOpts) ->
     load_all_servers(Servers, ReqOpts, #{}, #{}).
 load_all_servers([], _Request, Waiting, Running) ->
     {Waiting, Running};
-load_all_servers([#{name := Name0} = Options0|More], ReqOpts, Waiting, Running) ->
+load_all_servers([#{name := Name0} = Options0 | More], ReqOpts, Waiting, Running) ->
     Name = iolist_to_binary(Name0),
     Options = Options0#{name => Name},
     {NWaiting, NRunning} =
diff --git a/apps/emqx_exhook/src/emqx_exhook_server.erl b/apps/emqx_exhook/src/emqx_exhook_server.erl
index 088720cbd..b66b30a26 100644
--- a/apps/emqx_exhook/src/emqx_exhook_server.erl
+++ b/apps/emqx_exhook/src/emqx_exhook_server.erl
@@ -75,6 +75,8 @@
 
 -dialyzer({nowarn_function, [inc_metrics/2]}).
 
+-elvis([{elvis_style, dont_repeat_yourself, disable}]).
+
 %%--------------------------------------------------------------------
 %% Load/Unload APIs
 %%--------------------------------------------------------------------
@@ -178,16 +180,19 @@ resolve_hookspec(HookSpecs) when is_list(HookSpecs) ->
         case maps:get(name, HookSpec, undefined) of
             undefined -> Acc;
             Name0 ->
-                Name = try binary_to_existing_atom(Name0, utf8) catch T:R:_ -> {T,R} end,
-                case lists:member(Name, AvailableHooks) of
-                    true ->
-                        case lists:member(Name, MessageHooks) of
-                            true ->
-                                Acc#{Name => #{topics => maps:get(topics, HookSpec, [])}};
-                            _ ->
-                                Acc#{Name => #{}}
-                        end;
-                    _ -> error({unknown_hookpoint, Name})
+                Name = try
+                           binary_to_existing_atom(Name0, utf8)
+                       catch T:R:_ -> {T,R}
+                       end,
+                case {lists:member(Name, AvailableHooks),
+                      lists:member(Name, MessageHooks)} of
+                    {false, _} ->
+                        error({unknown_hookpoint, Name});
+                    {true, false} ->
+                        Acc#{Name => #{}};
+                    {true, true} ->
+                        Acc#{Name => #{
+                              topics => maps:get(topics, HookSpec, [])}}
                 end
         end
     end, #{}, HookSpecs).
@@ -260,7 +265,7 @@ call(Hookpoint, Req, #server{name = ChannName, options = ReqOpts,
 %% @private
 inc_metrics(IncFun, Name) when is_function(IncFun) ->
     %% BACKW: e4.2.0-e4.2.2
-    {env, [Prefix|_]} = erlang:fun_info(IncFun, env),
+    {env, [Prefix | _]} = erlang:fun_info(IncFun, env),
     inc_metrics(Prefix, Name);
 inc_metrics(Prefix, Name) when is_list(Prefix) ->
     emqx_metrics:inc(list_to_atom(Prefix ++ atom_to_list(Name))).