diff --git a/sbin/umount/umount.c b/sbin/umount/umount.c
index 93b50c042fa7..57baed99de2a 100644
--- a/sbin/umount/umount.c
+++ b/sbin/umount/umount.c
@@ -214,10 +214,8 @@ umountall(char **typelist)
 		    strcmp(fs->fs_type, FSTAB_RQ))
 			continue;
 		/* If an unknown file system type, complain. */
-		if (getvfsbyname(fs->fs_vfstype, &vfc) == -1) {
-			warnx("%s: unknown mount type", fs->fs_vfstype);
+		if (getvfsbyname(fs->fs_vfstype, &vfc) == -1)
 			continue;
-		}
 		if (checkvfsname(fs->fs_vfstype, typelist))
 			continue;