diff --git a/serverconn.go b/serverconn.go
index 8ddde0c9..ecfde82e 100644
--- a/serverconn.go
+++ b/serverconn.go
@@ -190,11 +190,6 @@ func (sc *ServerConn) SetuppedTracksProtocol() *StreamProtocol {
 	return sc.setuppedTracksProtocol
 }
 
-// SetuppedTracksLen returns the number of setupped tracks.
-func (sc *ServerConn) SetuppedTracksLen() int {
-	return len(sc.setuppedTracks)
-}
-
 // HasSetuppedTrack checks whether a track has been setup.
 func (sc *ServerConn) HasSetuppedTrack(trackID int) bool {
 	_, ok := sc.setuppedTracks[trackID]