diff --git a/format/mp4m/mp4io/mp4io.go b/format/mp4m/mp4io/mp4io.go
index 5ce5ce8..0aab546 100644
--- a/format/mp4m/mp4io/mp4io.go
+++ b/format/mp4m/mp4io/mp4io.go
@@ -376,7 +376,7 @@ func (self *ElemStreamDesc) parseDescHdr(b []byte, offset int) (n int, tag uint8
 	return
 }
 
-func ReadFileAtoms(r io.ReadSeeker, name string) (atoms []Atom, err error) {
+func ReadFileAtoms(r io.ReadSeeker) (atoms []Atom, err error) {
 	for {
 		offset, _ := r.Seek(0, 1)
 		taghdr := make([]byte, 8)