diff --git a/sys/fs/nullfs/null_vnops.c b/sys/fs/nullfs/null_vnops.c
index e16f53a152f9..3434debba6d8 100644
--- a/sys/fs/nullfs/null_vnops.c
+++ b/sys/fs/nullfs/null_vnops.c
@@ -724,6 +724,7 @@ struct vop_vector null_vnodeops = {
 	.vop_getattr =		null_getattr,
 	.vop_getwritemount =	null_getwritemount,
 	.vop_inactive =		null_inactive,
+	.vop_islocked =		vop_stdislocked,
 	.vop_lock1 =		null_lock,
 	.vop_lookup =		null_lookup,
 	.vop_open =		null_open,