diff --git a/bbgo/exchange/binance/stream.go b/bbgo/exchange/binance/stream.go
index 0a04d9b99..a9760c9a1 100644
--- a/bbgo/exchange/binance/stream.go
+++ b/bbgo/exchange/binance/stream.go
@@ -127,7 +127,7 @@ func (s *PrivateStream) Connect(ctx context.Context, eventC chan interface{}) er
 func (s *PrivateStream) read(ctx context.Context, eventC chan interface{}) {
 	defer close(eventC)
 
-	ticker := time.NewTicker(30 * time.Minute)
+	ticker := time.NewTicker(10 * time.Minute)
 	defer ticker.Stop()
 
 	for {
diff --git a/bbgo/trader.go b/bbgo/trader.go
index 345f5d684..84dcad17a 100644
--- a/bbgo/trader.go
+++ b/bbgo/trader.go
@@ -11,6 +11,11 @@ import (
 	"github.com/c9s/bbgo/pkg/bbgo/types"
 )
 
+type Strategy interface {
+	Init(trader *Trader) error
+	OnNewStream(stream *binance.PrivateStream) error
+}
+
 type Trader struct {
 	Notifier *SlackNotifier
 
@@ -22,12 +27,6 @@ type Trader struct {
 	reportTimer *time.Timer
 }
 
-
-type Strategy interface {
-	Init(trader *Trader) error
-	OnNewStream(stream *binance.PrivateStream) error
-}
-
 func (trader *Trader) RunStrategy(ctx context.Context, strategy Strategy) (chan struct{}, error) {
 	symbol := trader.Context.Symbol