diff --git a/sbin/mount_nfs/mount_nfs.c b/sbin/mount_nfs/mount_nfs.c
index 404e337..b7bbebd 100644
--- a/sbin/mount_nfs/mount_nfs.c
+++ b/sbin/mount_nfs/mount_nfs.c
@@ -288,8 +288,12 @@ main(int argc, char **argv)
 		nfsproto = IPPROTO_UDP;
 		nfsargsp->sotype = SOCK_DGRAM;
 	}
+
+	/* INTR by default */
+	nfsargsp->flags |= NFSMNT_INT;
+
 	while ((c = getopt(argc, argv,
-	    "23a:bcdD:g:I:iKlm:No:PR:r:sTt:w:x:U")) != -1)
+	    "23a:bcdD:g:I:iKlm:No:PR:r:sTt:w:x:uU")) != -1)
 		switch (c) {
 		case '2':
 			mountmode = V2;
@@ -340,6 +344,9 @@ main(int argc, char **argv)
 		case 'i':
 			nfsargsp->flags |= NFSMNT_INT;
 			break;
+		case 'u':
+			nfsargsp->flags &= ~NFSMNT_INT;
+			break;
 #ifdef NFSKERB
 		case 'K':
 			nfsargsp->flags |= NFSMNT_KERB;
@@ -1050,7 +1057,7 @@ static void
 usage(void)
 {
 	fprintf(stderr, "%s\n%s\n%s\n%s\n",
-"usage: mount_nfs [-23KNPTUbcdils] [-D deadthresh] [-I readdirsize]",
+"usage: mount_nfs [-23KNPTUbcdilus] [-D deadthresh] [-I readdirsize]",
 "                 [-R retrycnt] [-a maxreadahead]",
 "                 [-g maxgroups] [-m realm] [-o options] [-r readsize]",
 "                 [-t timeout] [-w writesize] [-x retrans] rhost:path node");