diff --git a/xfr.go b/xfr.go
index 3d2b3e6a..c098925d 100644
--- a/xfr.go
+++ b/xfr.go
@@ -107,7 +107,7 @@ func (t *Transfer) inIxfr(id uint16, c chan *Envelope) {
 		t.SetReadDeadline(time.Now().Add(timeout))
 		in, err := t.ReadMsg()
 		if err != nil {
-			c <- &Envelope{in.Answer, err}
+			c <- &Envelope{nil, err}
 			return
 		}
 		if id != in.Id {