diff --git a/cmd/run.go b/cmd/run.go
index 50ff80490..6c4066928 100644
--- a/cmd/run.go
+++ b/cmd/run.go
@@ -14,12 +14,14 @@ import (
 	"github.com/c9s/bbgo/pkg/config"
 	"github.com/c9s/bbgo/pkg/notifier/slacknotifier"
 	"github.com/c9s/bbgo/pkg/slack/slacklog"
+
+	_ "github.com/c9s/bbgo/pkg/strategy/buyandhold"
 )
 
 var errSlackTokenUndefined = errors.New("slack token is not defined.")
 
 func init() {
-	runCmd.Flags().String("config", "", "strategy config file")
+	runCmd.Flags().String("config", "config/bbgo.yaml", "strategy config file")
 	runCmd.Flags().String("since", "", "pnl since time")
 	RootCmd.AddCommand(runCmd)
 }
@@ -56,7 +58,6 @@ var runCmd = &cobra.Command{
 
 		log.AddHook(slacklog.NewLogHook(slackToken, viper.GetString("slack-error-channel")))
 
-		// TODO: load channel from config file
 		var notifier = slacknotifier.New(slackToken, viper.GetString("slack-channel"))
 
 		db, err := cmdutil.ConnectMySQL()
@@ -71,11 +72,13 @@ var runCmd = &cobra.Command{
 
 		for _, entry := range userConfig.ExchangeStrategies {
 			for _, mount := range entry.Mounts {
+				log.Infof("attaching strategy %T on %s...", entry.Strategy, mount)
 				trader.AttachStrategyOn(mount, entry.Strategy)
 			}
 		}
 
 		for _, strategy := range userConfig.CrossExchangeStrategies {
+			log.Infof("attaching strategy %T", strategy)
 			trader.AttachCrossExchangeStrategy(strategy)
 		}
 
diff --git a/config/bbgo.yaml b/config/bbgo.yaml
index 98be53316..49a767bd3 100644
--- a/config/bbgo.yaml
+++ b/config/bbgo.yaml
@@ -22,9 +22,9 @@ sessions:
     secretVar: BINANCE_API_SECRET
 
 exchangeStrategies:
-  - on: binance
-    buyandhold:
-      symbol: "BTCUSDT"
-      interval: "1m"
-      baseQuantity: 0.1
-      minDropPercentage: -0.05
+- on: binance
+  buyandhold:
+    symbol: "BTCUSDT"
+    interval: "1m"
+    baseQuantity: 0.1
+    minDropPercentage: -0.05
diff --git a/pkg/config/loader.go b/pkg/config/loader.go
index 8199a1b23..f90978743 100644
--- a/pkg/config/loader.go
+++ b/pkg/config/loader.go
@@ -100,6 +100,7 @@ func loadExchangeStrategies(stash Stash) (strategies []SingleExchangeStrategyCon
 	exchangeStrategiesConf, ok := stash["exchangeStrategies"]
 	if !ok {
 		return strategies, nil
+		// return nil, errors.New("exchangeStrategies is not defined")
 	}
 
 	configList, ok := exchangeStrategiesConf.([]interface{})