diff --git a/src/udp/ntUdpSrv.erl b/src/udp/ntUdpSrv.erl
index 37e75c7..0535fd3 100644
--- a/src/udp/ntUdpSrv.erl
+++ b/src/udp/ntUdpSrv.erl
@@ -153,7 +153,7 @@ handleMsg({udp, Sock, IP, InPortNo, Packet}, #state{oSock = Sock, conMod = ConMo
                kpS
          end
    end;
-handleMsg({udp_passive, Sock}, #state{oSock = Sock} = State) ->
+handleMsg({udp_passive, Sock}, #state{oSock = Sock} = _State) ->
    inet:setopts(Sock, [{active, 100}]),
    kpS;