diff --git a/av/avutil/avutil.go b/av/avutil/avutil.go
index 78bd741..4835089 100644
--- a/av/avutil/avutil.go
+++ b/av/avutil/avutil.go
@@ -135,7 +135,7 @@ func (self *Handlers) Open(uri string) (demuxer av.DemuxCloser, err error) {
 		listen = true
 	}
 
-	util.PrintCallTrace(1, "Handlers.Open")
+	util.PrintCallTrace(1, self.handlers)
 
 	for _, handler := range self.handlers {
 		if listen {