diff --git a/pkg/rtsp/server.go b/pkg/rtsp/server.go
index cefaef1d..29f97b5c 100644
--- a/pkg/rtsp/server.go
+++ b/pkg/rtsp/server.go
@@ -141,17 +141,14 @@ func (c *Conn) Accept() error {
 			}
 
 		case MethodSetup:
-			tr := req.Header.Get("Transport")
-
 			res := &tcp.Response{
 				Header:  map[string][]string{},
 				Request: req,
 			}
 
 			// Test if client requests TCP transport, otherwise return 461 Transport not supported
-			// This allows smart clients who initially requested UDP to fall back on TCP transport.
-			if strings.HasPrefix(tr, "RTP/AVP/TCP") {
-
+			// This allows smart clients who initially requested UDP to fall back on TCP transport
+			if tr := req.Header.Get("Transport"); strings.HasPrefix(tr, "RTP/AVP/TCP") {
 				c.session = core.RandString(8, 10)
 				c.state = StateSetup
 
@@ -159,16 +156,8 @@ func (c *Conn) Accept() error {
 					if i := reqTrackID(req); i >= 0 && i < len(c.Senders) {
 						// mark sender as SETUP
 						c.Senders[i].Media.ID = MethodSetup
-						interleaved := fmt.Sprintf("%d-%d", i*2, i*2+1)
-				
-						// Check if tr already contains the 'interleaved' parameter
-						if strings.Contains(tr, "interleaved=") {
-							// If so, just update the interleaved value
-							res.Header.Set("Transport", strings.Replace(tr, "interleaved=[^;]*", "interleaved="+interleaved, 1))
-						} else {
-							// Otherwise, append the interleaved parameter
-							res.Header.Set("Transport", tr+";interleaved="+interleaved)
-						}
+						tr = fmt.Sprintf("RTP/AVP/TCP;unicast;interleaved=%d-%d", i*2, i*2+1)
+						res.Header.Set("Transport", tr)
 					} else {
 						res.Status = "400 Bad Request"
 					}