diff --git a/src/emqx_access_control.erl b/src/emqx_access_control.erl
index 2b9cb4211..239769de6 100644
--- a/src/emqx_access_control.erl
+++ b/src/emqx_access_control.erl
@@ -156,15 +156,13 @@ handle_call({register_mod, Type, Mod, Opts, Seq}, _From, State) ->
     reply(case lists:keymember(Mod, 1, Mods) of
               true  -> {error, already_exists};
               false ->
-                    try
-                        case Mod:init(Opts) of
-                            {ok, ModState} ->
-                                NewMods = lists:sort(fun({_, _, Seq1}, {_, _, Seq2}) ->
-                                                            Seq1 >= Seq2
-                                                    end, [{Mod, ModState, Seq} | Mods]),
-                                ets:insert(?TAB, {tab_key(Type), NewMods}),
-                                ok
-                        end
+                    try Mod:init(Opts) of
+                        {ok, ModState} ->
+                            NewMods = lists:sort(fun({_, _, Seq1}, {_, _, Seq2}) ->
+                                                        Seq1 >= Seq2
+                                                end, [{Mod, ModState, Seq} | Mods]),
+                            ets:insert(?TAB, {tab_key(Type), NewMods}),
+                            ok
                     catch
                         _:Error ->
                             emqx_logger:error("[AccessControl] Failed to init ~s: ~p", [Mod, Error]),