diff --git a/relay.go b/relay.go
index 735098b..7457b69 100644
--- a/relay.go
+++ b/relay.go
@@ -217,7 +217,8 @@ func newCall(mainOffer receivedSignal, r *activeRelay) {
 
 	// Setup config
 	peerConnectionConfig := webrtc.Configuration{
-		ICEServers: callConf.iceServers,
+		ICEServers:   callConf.iceServers,
+		SDPSemantics: webrtc.SDPSemanticsUnifiedPlanWithFallback,
 	}
 
 	// Create a new RTCPeerConnection
@@ -396,13 +397,6 @@ func newCall(mainOffer receivedSignal, r *activeRelay) {
 
 	clients := make(map[string]*webrtc.PeerConnection, 1)
 
-	// Close all clients connections at the end
-	defer func() {
-		for _, v := range clients {
-			v.Close()
-		}
-	}()
-
 	// Enter messags loop
 	for {