diff --git a/sys/dev/isp/isp_inline.h b/sys/dev/isp/isp_inline.h
index e59d2776ceae..c6be127cde3c 100644
--- a/sys/dev/isp/isp_inline.h
+++ b/sys/dev/isp/isp_inline.h
@@ -44,71 +44,54 @@ static INLINE void
 isp_prtstst(sp)
 	ispstatusreq_t *sp;
 {
-	char buf[172], *p = buf;
-	sprintf(p, "states->");
+	char buf[172];
+	buf[0] = 0;
+	STRNCAT(buf, "states=>", sizeof buf);
 	if (sp->req_state_flags & RQSF_GOT_BUS) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "GOT_BUS ");
+		STRNCAT(buf, " GOT_BUS", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_GOT_TARGET) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "GOT_TGT ");
+		STRNCAT(buf, " GOT_TGT", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_SENT_CDB) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "SENT_CDB ");
+		STRNCAT(buf, " SENT_CDB", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_XFRD_DATA) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "XFRD_DATA ");
+		STRNCAT(buf, " XFRD_DATA", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_GOT_STATUS) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "GOT_STS ");
+		STRNCAT(buf, " GOT_STS", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_GOT_SENSE) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "GOT_SNS ");
+		STRNCAT(buf, " GOT_SNS", sizeof buf);
 	}
 	if (sp->req_state_flags & RQSF_XFER_COMPLETE) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "XFR_CMPLT ");
+		STRNCAT(buf, " XFR_CMPLT", sizeof buf);
 	}
-	p += strlen(p);
-	sprintf(p, "%s%s", buf, "\n");
-	p += strlen(p);
-	sprintf(p, "%s%s", buf, "status->");
+	STRNCAT(buf, "\nstatus=>", sizeof buf);
 	if (sp->req_status_flags & RQSTF_DISCONNECT) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Disconnect ");
+		STRNCAT(buf, " Disconnect", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_SYNCHRONOUS) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Sync_xfr ");
+		STRNCAT(buf, " Sync_xfr", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_PARITY_ERROR) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Parity ");
+		STRNCAT(buf, " Parity", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_BUS_RESET) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Bus_Reset ");
+		STRNCAT(buf, " Bus_Reset", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_DEVICE_RESET) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Device_Reset ");
+		STRNCAT(buf, " Device_Reset", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_ABORTED) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Aborted ");
+		STRNCAT(buf, " Aborted", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_TIMEOUT) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Timeout ");
+		STRNCAT(buf, " Timeout", sizeof buf);
 	}
 	if (sp->req_status_flags & RQSTF_NEGOTIATION) {
-		p += strlen(p);
-		sprintf(p, "%s%s", buf, "Negotiation ");
+		STRNCAT(buf, " Negotiation", sizeof buf);
 	}
 	PRINTF(buf, "%s\n", buf);
 }