diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 8ed2f5649029f9086ee43a8cc6be26f9af36f650..408eea7086aace341d1ed9812d956db35cfdfb86 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -161,7 +161,7 @@ int register_qdisc(struct Qdisc_ops *qops)
 	if (qops->cl_ops) {
 		const struct Qdisc_class_ops *cops = qops->cl_ops;
 
-		if (!(cops->get && cops->put))
+		if (!(cops->get && cops->put && cops->walk && cops->leaf))
 			goto out_einval;
 
 		if (cops->tcf_chain && !(cops->bind_tcf && cops->unbind_tcf))