diff --git a/src/wsio_handler.erl b/src/wsio_handler.erl
index 7d8c847..affaa98 100644
--- a/src/wsio_handler.erl
+++ b/src/wsio_handler.erl
@@ -23,9 +23,9 @@ websocket_handle({text, <<Data/binary>>}, S) ->
       {ok, S}
   end;
 websocket_handle({json, #{<<"ref">> := Ref}}, #{wsbus := nil} = S) ->
-  {[{text, jsx:encode(#{<<"ref">> => Ref, <<"wsio-code">> => 0})}], S};
+  {[{text, jsx:encode(#{<<"ref">> => Ref, <<"wsio-code">> => <<"0">>})}], S};
 websocket_handle({json, Data}, #{wsbus := BUS} = S) ->
-  gen_server:cast(BUS, {call, Data, self()}),
+  gen_server:cast(BUS, {call, Data}),
   {ok, S};
 websocket_handle(_, State) ->
   {ok, State}.