diff --git a/pkg/cmd/backtest.go b/pkg/cmd/backtest.go
index f28949869..881b249c1 100644
--- a/pkg/cmd/backtest.go
+++ b/pkg/cmd/backtest.go
@@ -322,6 +322,9 @@ var BacktestCmd = &cobra.Command{
 			})
 
 			dumper := backtest.NewKLineDumper(kLineDataDir)
+			defer func() {
+				_ = dumper.Close()
+			}()
 			defer func() {
 				if err := dumper.Close(); err != nil {
 					log.WithError(err).Errorf("kline dumper can not close files")