diff --git a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
index 65fc902640b..86561e9f65a 100644
--- a/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
+++ b/sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_ctldir.c
@@ -1002,6 +1002,7 @@ zfsctl_snapdir_lookup(ap)
 			 * The snapshot was unmounted behind our backs,
 			 * try to remount it.
 			 */
+			VERIFY(zfsctl_snapshot_zname(dvp, nm, MAXNAMELEN, snapname) == 0);
 			goto domount;
 		} else {
 			/*