diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index db9ad65..b5f40d7 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -333,8 +333,10 @@
 
 static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
 {
+#ifdef CONFIG_NET_SCHED
 	if (sch->stab)
 		qdisc_calculate_pkt_len(skb, sch->stab);
+#endif
 	return sch->enqueue(skb, sch);
 }