diff --git a/ex/axfr/axfr.go b/ex/axfr/axfr.go
index 603d43ca..a776a495 100644
--- a/ex/axfr/axfr.go
+++ b/ex/axfr/axfr.go
@@ -18,7 +18,6 @@ func main() {
 	client := dns.NewClient()
 	client.Net = "tcp"
 	m := new(dns.Msg)
-	m.MsgHdr.Id = dns.Id()
 	if *serial > 0 {
 		m.SetIxfr(zone, uint32(*serial))
 	} else {