diff --git a/sys/ufs/ffs/ffs_extern.h b/sys/ufs/ffs/ffs_extern.h
index c29e5d5dc12a..b4ec348f3329 100644
--- a/sys/ufs/ffs/ffs_extern.h
+++ b/sys/ufs/ffs/ffs_extern.h
@@ -77,7 +77,6 @@ void	ffs_fserr(struct fs *, ino_t, char *);
 int	ffs_isblock(struct fs *, u_char *, ufs1_daddr_t);
 int	ffs_isfreeblock(struct fs *, u_char *, ufs1_daddr_t);
 void	ffs_load_inode(struct buf *, struct inode *, struct fs *, ino_t);
-int	ffs_mountroot(void);
 void	ffs_oldfscompat_write(struct fs *, struct ufsmount *);
 int	ffs_own_mount(const struct mount *mp);
 int	ffs_reallocblks(struct vop_reallocblks_args *);