diff --git a/peer/peer/peer_data_channel.go b/peer/peer/peer_data_channel.go
index 3e34eef..add26de 100644
--- a/peer/peer/peer_data_channel.go
+++ b/peer/peer/peer_data_channel.go
@@ -92,7 +92,7 @@ func (cpc *CwtchPeerDataChannel) OpenOutboundResult(err error, crm *Protocol_Dat
 // Packet is called for each raw packet received on this channel.
 func (cpc *CwtchPeerDataChannel) Packet(data []byte) {
 	ret := cpc.Handler.HandlePacket(data)
-	if len(ret) >= 0 {
+	if len(ret) > 0 {
 		cpc.channel.SendMessage(ret)
 	}
 }