diff --git a/include/netlink-private/types.h b/include/netlink-private/types.h
index 42eb07f..6b6f91b 100644
--- a/include/netlink-private/types.h
+++ b/include/netlink-private/types.h
@@ -809,6 +809,11 @@ struct rtnl_plug
 	uint32_t        limit;
 };
 
+struct rtnl_blackhole_qdisc
+{
+	uint32_t	flags;
+};
+
 struct flnl_request
 {
 	NLHDR_COMMON
diff --git a/lib/route/qdisc/blackhole.c b/lib/route/qdisc/blackhole.c
index 339cf78..cce96a4 100644
--- a/lib/route/qdisc/blackhole.c
+++ b/lib/route/qdisc/blackhole.c
@@ -22,6 +22,7 @@
 static struct rtnl_tc_ops blackhole_ops = {
 	.to_kind		= "blackhole",
 	.to_type		= RTNL_TC_TYPE_QDISC,
+	.to_size		= sizeof(struct rtnl_blackhole_qdisc),
 };
 
 static void __init blackhole_init(void)