diff --git a/pkg/strategy/buyandhold/strategy.go b/pkg/strategy/buyandhold/strategy.go
index ed753252db..756865530e 100644
--- a/pkg/strategy/buyandhold/strategy.go
+++ b/pkg/strategy/buyandhold/strategy.go
@@ -56,16 +56,6 @@ func (s *Strategy) Run(ctx context.Context, orderExecutor bbgo.OrderExecutor, se
 	var iw = types.IntervalWindow{Interval: s.Interval, Window: s.MovingAverageWindow}
 	var ema = standardIndicatorSet.EWMA(iw)
 
-	session.Stream.OnKLine(func(kline types.KLine) {
-		// skip k-lines from other symbols
-		if kline.Symbol != s.Symbol {
-			return
-		}
-
-		changePercentage := kline.GetChange() / kline.Open
-		log.Infof("change %f <=> %f", changePercentage, s.MinDropPercentage.Float64())
-	})
-
 	session.Stream.OnKLineClosed(func(kline types.KLine) {
 		// skip k-lines from other symbols
 		if kline.Symbol != s.Symbol {