diff --git a/drivers/netjack/netjack.c b/drivers/netjack/netjack.c
index c4f7219..ebf8e2b 100644
--- a/drivers/netjack/netjack.c
+++ b/drivers/netjack/netjack.c
@@ -167,7 +167,12 @@ int netjack_wait( netjack_driver_state_t *netj )
 	netj->deadline_goodness = (int)pkthdr->sync_state;
 	netj->packet_data_valid = 1;
 
-	int want_deadline = (netj->period_usecs/4+10*(int)netj->period_usecs*netj->latency/100);
+	int want_deadline;
+	if( netj->latency == 1 )
+		want_deadline = 0;
+	else
+		want_deadline = (netj->period_usecs/4+10*(int)netj->period_usecs*netj->latency/100);
+
 	if( netj->deadline_goodness != MASTER_FREEWHEELS ) {
 		if( netj->deadline_goodness < want_deadline ) {
 			netj->deadline_offset -= netj->period_usecs/100;