diff --git a/sys/dev/firewire/firewire.c b/sys/dev/firewire/firewire.c
index fb6af5750b21..e18bb8e113e4 100644
--- a/sys/dev/firewire/firewire.c
+++ b/sys/dev/firewire/firewire.c
@@ -1843,7 +1843,11 @@ fw_rcv(struct firewire_comm* fc, caddr_t buf, u_int len, u_int sub, u_int off, u
 		bind = fw_bindlookup(fc, ntohs(fp->mode.rreqq.dest_hi),
 			ntohl(fp->mode.rreqq.dest_lo));
 		if(bind == NULL){
+#if __FreeBSD_version >= 500000
 			printf("Unknown service addr 0x%08x:0x%08x tcode=%x\n",
+#else
+			printf("Unknown service addr 0x%08x:0x%08lx tcode=%x\n",
+#endif
 				ntohs(fp->mode.rreqq.dest_hi),
 				ntohl(fp->mode.rreqq.dest_lo),
 				fp->mode.common.tcode);
diff --git a/sys/dev/firewire/fwohci.c b/sys/dev/firewire/fwohci.c
index 62876065a20c..ea8532e7fd4e 100644
--- a/sys/dev/firewire/fwohci.c
+++ b/sys/dev/firewire/fwohci.c
@@ -2073,7 +2073,11 @@ print_db(volatile struct fwohcidb *db, u_int32_t ch, u_int32_t max)
 		"Cnt");
 	for( i = 0 ; i <= max ; i ++){
 		key = db[i].db.desc.cmd & OHCI_KEY_MASK;
+#if __FreeBSD_version >= 500000
 		printf("%08tx %s %s %s %s %5d %08x %08x %04x:%04x",
+#else
+		printf("%08x %s %s %s %s %5d %08x %08x %04x:%04x",
+#endif
 				vtophys(&db[i]),
 				dbcode[(db[i].db.desc.cmd >> 28) & 0xf],
 				dbkey[(db[i].db.desc.cmd >> 24) & 0x7],
diff --git a/sys/dev/firewire/if_fwe.c b/sys/dev/firewire/if_fwe.c
index 41f036166ef7..49722fee36a9 100644
--- a/sys/dev/firewire/if_fwe.c
+++ b/sys/dev/firewire/if_fwe.c
@@ -193,12 +193,18 @@ fwe_attach(device_t dev)
 	ifp->if_snd.ifq_maxlen = FWMAXQUEUE - 1;
 
 	s = splimp();
+#if __FreeBSD_version >= 500000
 	ether_ifattach(ifp, eaddr);
+#else
+	ether_ifattach(ifp, 1);
+#endif
 	splx(s);
 
         /* Tell the upper layer(s) we support long frames. */
 	ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
+#if __FreeBSD_version >= 500000
 	ifp->if_capabilities |= IFCAP_VLAN_MTU;
+#endif
 
 	ifp->if_snd.ifq_maxlen = MAX_QUEUED - 1;
 
@@ -241,7 +247,11 @@ fwe_detach(device_t dev)
 	s = splimp();
 
 	fwe_stop(fwe);
+#if __FreeBSD_version >= 500000
 	ether_ifdetach(&fwe->fwe_if);
+#else
+	ether_ifdetach(&fwe->fwe_if, 1);
+#endif
 
 	splx(s);
 	return 0;
@@ -328,7 +338,7 @@ fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 			break;
 		case SIOCADDMULTI:
 		case SIOCDELMULTI:
-		break;
+			break;
 
 		case SIOCGIFSTATUS:
 			s = splimp();
@@ -340,13 +350,22 @@ fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data)
 					"\tch %d dma %d\n",
 						fwe->stream_ch, fwe->dma_ch);
 			splx(s);
-		break;
-
+			break;
+#if __FreeBSD_version >= 500000
 		default:
+#else
+		case SIOCSIFADDR:
+		case SIOCGIFADDR:
+		case SIOCSIFMTU:
+#endif
 			s = splimp();
 			error = ether_ioctl(ifp, cmd, data);
 			splx(s);
 			return (error);
+#if __FreeBSD_version < 500000
+		default:
+			return (EINVAL);
+#endif
 	}
 
 	return (0);
@@ -432,7 +451,12 @@ fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp)
 		if (xfer == NULL) {
 			return;
 		}
+#if __FreeBSD_version >= 500000
 		BPF_MTAP(ifp, m);
+#else
+		if (ifp->if_bpf != NULL)
+			bpf_mtap(ifp, m);
+#endif
 
 		xfer->send.off = 0;
 		xfer->spd = 2;
@@ -540,7 +564,13 @@ fwe_as_input(struct fw_xferq *xferq)
 #endif
 		p = xfer->recv.buf + xfer->recv.off + HDR_LEN + ALIGN_PAD;
 		eh = (struct ether_header *)p;
+#if __FreeBSD_version >= 500000
 		len -= xfer->recv.off + HDR_LEN + ALIGN_PAD;
+#else
+		p += sizeof(struct ether_header);
+		len -= xfer->recv.off + HDR_LEN + ALIGN_PAD
+						+ sizeof(struct ether_header);
+#endif
 		m->m_data = p;
 		m->m_len = m->m_pkthdr.len = len;
 		m->m_pkthdr.rcvif = ifp;
@@ -560,7 +590,11 @@ fwe_as_input(struct fw_xferq *xferq)
 			 c[20], c[21], c[22], c[23]
 		 );
 #endif
+#if __FreeBSD_version >= 500000
 		(*ifp->if_input)(ifp, m);
+#else
+		ether_input(ifp, eh, m);
+#endif
 		ifp->if_ipackets ++;
 
 		xfer->recv.buf = NULL;
diff --git a/sys/dev/firewire/sbp.c b/sys/dev/firewire/sbp.c
index ed53d03891cc..9954778934ec 100644
--- a/sys/dev/firewire/sbp.c
+++ b/sys/dev/firewire/sbp.c
@@ -1353,7 +1353,11 @@ SBP_DEBUG(0)
 
 		sbp_show_sdev_info(sdev, 2);
 		printf("ORB status src:%x resp:%x dead:%x"
+#if __FreeBSD_version >= 500000
 				" len:%x stat:%x orb:%x%08x\n",
+#else
+				" len:%x stat:%x orb:%x%08lx\n",
+#endif
 			sbp_status->src, sbp_status->resp, sbp_status->dead,
 			sbp_status->len, sbp_status->status,
 			ntohs(sbp_status->orb_hi), ntohl(sbp_status->orb_lo));
@@ -2024,7 +2028,11 @@ sbp_execute_ocb(void *arg,  bus_dma_segment_t *segments, int seg, int error)
 SBP_DEBUG(1)
 		printf("sbp_execute_ocb: seg %d", seg);
 		for (i = 0; i < seg; i++)
+#if __FreeBSD_version >= 500000
 			printf(", %tx:%zd", segments[i].ds_addr,
+#else
+			printf(", %x:%zd", segments[i].ds_addr,
+#endif
 						segments[i].ds_len);
 		printf("\n");
 END_DEBUG
@@ -2068,7 +2076,11 @@ sbp_dequeue_ocb(struct sbp_dev *sdev, u_int32_t orb_lo)
 		next = STAILQ_NEXT(ocb, ocb);
 		flags = ocb->flags;
 SBP_DEBUG(1)
+#if __FreeBSD_version >= 500000
 		printf("orb: 0x%tx next: 0x%x, flags %x\n",
+#else
+		printf("orb: 0x%x next: 0x%lx, flags %x\n",
+#endif
 			vtophys(&ocb->orb[0]), ntohl(ocb->orb[1]), flags);
 END_DEBUG
 		if (vtophys(&ocb->orb[0]) == orb_lo) {
@@ -2114,7 +2126,11 @@ sbp_enqueue_ocb(struct sbp_dev *sdev, struct sbp_ocb *ocb)
 
 SBP_DEBUG(2)
 	sbp_show_sdev_info(sdev, 2);
+#if __FreeBSD_version >= 500000
 	printf("sbp_enqueue_ocb orb=0x%tx in physical memory\n", vtophys(&ocb->orb[0]));
+#else
+	printf("sbp_enqueue_ocb orb=0x%x in physical memory\n", vtophys(&ocb->orb[0]));
+#endif
 END_DEBUG
 	prev = STAILQ_LAST(&sdev->ocbs, sbp_ocb, ocb);
 	STAILQ_INSERT_TAIL(&sdev->ocbs, ocb, ocb);
@@ -2127,7 +2143,11 @@ END_DEBUG
 		&& ((prev->flags & OCB_ACT_MASK) == OCB_ACT_CMD)
 		&& ((ocb->flags & OCB_ACT_MASK) == OCB_ACT_CMD)) {
 SBP_DEBUG(1)
+#if __FreeBSD_version >= 500000
 	printf("linking chain 0x%tx -> 0x%tx\n", vtophys(&prev->orb[0]),
+#else
+	printf("linking chain 0x%x -> 0x%x\n", vtophys(&prev->orb[0]),
+#endif
 			vtophys(&ocb->orb[0]));
 END_DEBUG
 		prev->flags |= OCB_RESERVED;