diff --git a/conf/conf.go b/conf/conf.go
index c84adb6..464aca2 100644
--- a/conf/conf.go
+++ b/conf/conf.go
@@ -387,13 +387,20 @@ func GetNoShowBookings(ctx context.Context) ([]*appdb.Event, error) {
 				WHERE end_time > NOW()
 					AND start_time <= NOW() - INTERVAL '%d MINUTES'
 					AND cancelled_at IS NULL
+					AND id IN (
+						-- Include only those events that have presence monitored.
+						SELECT DISTINCT event_id
+						FROM booking.presence_logs
+						WHERE check_time > NOW() - INTERVAL '%d MINUTES'
+					)
 					AND id NOT IN (
+						-- Exclude events that have been visited.
 						SELECT DISTINCT event_id
 						FROM booking.presence_logs
 						WHERE occupied = true
 							AND check_time > NOW() - INTERVAL '%d MINUTES'
 					);
-			`, cfg.NoShowMins, cfg.NoShowMins)).
+			`, cfg.NoShowMins, cfg.NoShowMins, cfg.NoShowMins)).
 		BindG(ctx, &bookings)
 	if err != nil {
 		return nil, fmt.Errorf("querying no show bookings: %v", err)