diff --git a/reflector/M17Protocol.cpp b/reflector/M17Protocol.cpp
index 94a1d57..063995c 100644
--- a/reflector/M17Protocol.cpp
+++ b/reflector/M17Protocol.cpp
@@ -189,6 +189,7 @@ void CM17Protocol::OnDvHeaderPacketIn(std::unique_ptr<CDvHeaderPacket> &Header,
 	{
 		// no stream open yet, open a new one
 		CCallsign my(Header->GetMyCallsign());
+		my.SetSuffix("M17");
 		CCallsign rpt1(Header->GetRpt1Callsign());
 		CCallsign rpt2(Header->GetRpt2Callsign());