diff --git a/net/sched/sch_taprio.c b/net/sched/sch_taprio.c
index 944b1af3215668..76bebe51619487 100644
--- a/net/sched/sch_taprio.c
+++ b/net/sched/sch_taprio.c
@@ -961,7 +961,7 @@ static void taprio_set_picos_per_byte(struct net_device *dev,
 	if (err < 0)
 		goto skip;
 
-	if (ecmd.base.speed != SPEED_UNKNOWN)
+	if (ecmd.base.speed && ecmd.base.speed != SPEED_UNKNOWN)
 		speed = ecmd.base.speed;
 
 skip: