diff --git a/apps/iot/src/message/message_codec.erl b/apps/iot/src/message/message_codec.erl
index e5bd740..065eeca 100644
--- a/apps/iot/src/message/message_codec.erl
+++ b/apps/iot/src/message/message_codec.erl
@@ -87,7 +87,7 @@ decode0(?MESSAGE_JSONRPC_REPLY, [ReplyBin]) ->
     case jiffy:decode(ReplyBin, [return_maps]) of
         #{<<"result">> := Result} ->
             {ok, #jsonrpc_reply{result = Result}};
-        #{<<"id">> := Id, <<"error">> := Error} ->
+        #{<<"error">> := Error} ->
             {ok, #jsonrpc_reply{error = Error}};
         _ ->
             error