diff --git a/reflector/DVFramePacket.cpp b/reflector/DVFramePacket.cpp
index aee8940..7ba0eeb 100644
--- a/reflector/DVFramePacket.cpp
+++ b/reflector/DVFramePacket.cpp
@@ -151,7 +151,6 @@ void CDvFramePacket::SetTCParams(uint32_t seq)
 {
 	m_TCPack.sequence = seq;
 	m_TCPack.streamid = m_uiStreamId;
-	m_TCPack.is_second = m_bIsSecond;
 	m_TCPack.is_last = m_bLastPacket;
 	m_TCPack.module = m_cModule;
 	m_TCPack.rt_timer.start();
diff --git a/reflector/M17Protocol.cpp b/reflector/M17Protocol.cpp
index d39dd39..4fe7ae9 100644
--- a/reflector/M17Protocol.cpp
+++ b/reflector/M17Protocol.cpp
@@ -236,7 +236,7 @@ void CM17Protocol::HandleQueue(void)
 			m_StreamsCache[module].m_dvHeader = CDvHeaderPacket((const CDvHeaderPacket &)*packet.get());
 			m_StreamsCache[module].m_iSeqCounter = 0;
 		}
-		else if ( packet->IsDvFrame() && (packet->IsSecond() || packet->IsLastPacket()))
+		else if ( packet->IsDvFrame() && ((1 == m_StreamsCache[module].m_iSeqCounter % 2) || packet->IsLastPacket()))
 		{
 			// encode it
 			SM17Frame frame;
diff --git a/reflector/Packet.cpp b/reflector/Packet.cpp
index fa8bbfa..504ab60 100644
--- a/reflector/Packet.cpp
+++ b/reflector/Packet.cpp
@@ -153,7 +153,4 @@ void CPacket::UpdatePids(const uint32_t pid)
 		// frames are every 20 milliseconds, so the m17 data will come every 40 milliseconds
 		m_uiM17FrameNumber = (pid / 2) % 0x8000U;
 	}
-
-	// set the Is Second member used for M17 clients
-	m_bIsSecond = (1 == pid % 2);
 }
diff --git a/reflector/Packet.h b/reflector/Packet.h
index ac2a469..b62cb8c 100644
--- a/reflector/Packet.h
+++ b/reflector/Packet.h
@@ -60,7 +60,6 @@ public:
 	uint8_t      GetYsfPacketFrameId(void) const { return m_uiYsfPacketFrameId; }
 	char         GetPacketModule(void) const     { return m_cModule; }
 	bool         IsLocalOrigin(void) const       { return (m_eOrigin == EOrigin::local); }
-	bool         IsSecond(void) const            { return m_bIsSecond; }
 	ECodecType   GetCodecIn(void) const          { return m_eCodecIn; }
 
 	// set
@@ -75,7 +74,6 @@ protected:
 	ECodecType m_eCodecIn;
 	EOrigin    m_eOrigin;
 	bool       m_bLastPacket;
-	bool       m_bIsSecond;
 	char       m_cModule;
 	uint16_t   m_uiStreamId;
 	uint32_t   m_uiM17FrameNumber;
diff --git a/reflector/TCPacketDef.h b/reflector/TCPacketDef.h
index 5ffb3fe..006fe8f 100644
--- a/reflector/TCPacketDef.h
+++ b/reflector/TCPacketDef.h
@@ -29,7 +29,7 @@ using STCPacket = struct tcpacket_tag {
 	CTimer rt_timer;
 	uint32_t sequence;
 	char module;
-	bool is_second, is_last;
+	bool is_last;
 	uint16_t streamid;
 	ECodecType codec_in;
 	uint8_t dstar[9];