diff --git a/sys/bus/firewire/fwdev.c b/sys/bus/firewire/fwdev.c
--- a/sys/bus/firewire/fwdev.c
+++ b/sys/bus/firewire/fwdev.c
@@ -558,7 +558,7 @@
 		bcopy(fp, (void *)&xfer->send.hdr, tinfo->hdr_len);
 		if (pay_len > 0)
 			bcopy((char *)fp + tinfo->hdr_len,
-			    (void *)&xfer->send.payload, pay_len);
+			    (void *)xfer->send.payload, pay_len);
 		xfer->send.spd = asyreq->req.sped;
 		xfer->act.hand = fw_asy_callback;