diff --git a/pkg/sfu/buffer/rtpstats_sender.go b/pkg/sfu/buffer/rtpstats_sender.go
index 1cb0ff1bd..6dc952e12 100644
--- a/pkg/sfu/buffer/rtpstats_sender.go
+++ b/pkg/sfu/buffer/rtpstats_sender.go
@@ -807,7 +807,7 @@ func (r *RTPStatsSender) DeltaInfoSender(senderSnapshotID uint32) *RTPDeltaInfo
 	}
 }
 
-func (r *RTPStatsSender) ToString() string {
+func (r *RTPStatsSender) String() string {
 	r.lock.RLock()
 	defer r.lock.RUnlock()
 
diff --git a/pkg/sfu/downtrack.go b/pkg/sfu/downtrack.go
index ee1f9fa57..a2ef60926 100644
--- a/pkg/sfu/downtrack.go
+++ b/pkg/sfu/downtrack.go
@@ -133,7 +133,7 @@ type DownTrackState struct {
 
 func (d DownTrackState) String() string {
 	return fmt.Sprintf("DownTrackState{rtpStats: %s, deltaSender: %d, forwarder: %s}",
-		d.RTPStats.ToString(), d.DeltaStatsSenderSnapshotId, d.ForwarderState.String())
+		d.RTPStats, d.DeltaStatsSenderSnapshotId, d.ForwarderState.String())
 }
 
 // -------------------------------------------------------------------