diff --git a/sys/xdr/xdr_mem.c b/sys/xdr/xdr_mem.c
--- a/sys/xdr/xdr_mem.c
+++ b/sys/xdr/xdr_mem.c
@@ -121,7 +121,7 @@
 	if (xdrs->x_handy < sizeof(int32_t))
 		return (FALSE);
 	xdrs->x_handy -= sizeof(int32_t);
-	*lp = ntohl(*(u_int32_t *)xdrs->x_private);
+	*lp = ntohl(*(uint32_t *)xdrs->x_private);
 	xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
 	return (TRUE);
 }
@@ -133,7 +133,7 @@
 	if (xdrs->x_handy < sizeof(int32_t))
 		return (FALSE);
 	xdrs->x_handy -= sizeof(int32_t);
-	*(u_int32_t *)xdrs->x_private = htonl((u_int32_t)*lp);
+	*(uint32_t *)xdrs->x_private = htonl((uint32_t)*lp);
 	xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
 	return (TRUE);
 }
@@ -141,7 +141,7 @@
 static bool_t
 xdrmem_getlong_unaligned(XDR *xdrs, long *lp)
 {
-	u_int32_t l;
+	uint32_t l;
 
 	if (xdrs->x_handy < sizeof(int32_t))
 		return (FALSE);
@@ -155,12 +155,12 @@
 static bool_t
 xdrmem_putlong_unaligned(XDR *xdrs, const long *lp)
 {
-	u_int32_t l;
+	uint32_t l;
 
 	if (xdrs->x_handy < sizeof(int32_t))
 		return (FALSE);
 	xdrs->x_handy -= sizeof(int32_t);
-	l = htonl((u_int32_t)*lp);
+	l = htonl((uint32_t)*lp);
 	memmove(xdrs->x_private, &l, sizeof(int32_t));
 	xdrs->x_private = (char *)xdrs->x_private + sizeof(int32_t);
 	return (TRUE);