diff --git a/sys/dev/usb/ucom.c b/sys/dev/usb/ucom.c
index 5643e9d53fd2..877d412ef037 100644
--- a/sys/dev/usb/ucom.c
+++ b/sys/dev/usb/ucom.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: ucom.c,v 1.28 2000/09/13 05:17:14 toshii Exp $	*/
+/*	$NetBSD: ucom.c,v 1.29 2000/09/15 17:03:24 toshii Exp $	*/
 
 /*
  * Copyright (c) 1998, 2000 The NetBSD Foundation, Inc.
@@ -135,7 +135,7 @@ Static void	ucom_break(struct ucom_softc *, int);
 Static usbd_status ucomstartread(struct ucom_softc *);
 Static void	ucomreadcb(usbd_xfer_handle, usbd_private_handle, usbd_status);
 Static void	ucomwritecb(usbd_xfer_handle, usbd_private_handle, usbd_status);
-Static void	tiocm_to_ucom(struct ucom_softc *, int, int);
+Static void	tiocm_to_ucom(struct ucom_softc *, u_long, int);
 Static int	ucom_to_tiocm(struct ucom_softc *);
 
 USB_DECLARE_DRIVER(ucom);
@@ -621,7 +621,7 @@ ucom_do_ioctl(struct ucom_softc *sc, u_long cmd, caddr_t data,
 }
 
 Static void
-tiocm_to_ucom(struct ucom_softc *sc, int how, int ttybits)
+tiocm_to_ucom(struct ucom_softc *sc, u_long how, int ttybits)
 {
 	u_char combits;