diff --git a/chain/bank.go b/chain/bank.go
index c418c06..4b9b83f 100644
--- a/chain/bank.go
+++ b/chain/bank.go
@@ -18,11 +18,11 @@ type (
 	}
 )
 
-func NewBank(config string, units *unit.Bank) *Bank {
+func NewBank(chainsConfig, unitsConfig string) *Bank {
 	return &Bank{
-		config: config,
+		config: chainsConfig,
 		chains: map[string]*Chain{},
-		units:  units,
+		units:  unit.NewBank(unitsConfig),
 	}
 }
 
diff --git a/core/app.go b/core/app.go
index 93f2d24..307419d 100644
--- a/core/app.go
+++ b/core/app.go
@@ -8,7 +8,6 @@ import (
 	"syscall"
 
 	"github.com/localhots/yeast/chain"
-	"github.com/localhots/yeast/unit"
 )
 
 type (
@@ -23,10 +22,9 @@ func NewApp() *App {
 	conf := &Config{}
 	conf.Init()
 
-	ub := unit.NewBank(conf.C().UnitsConfig)
 	a := &App{
 		config: conf,
-		chains: chain.NewBank(conf.C().ChainsConfig, ub),
+		chains: chain.NewBank(conf.C().ChainsConfig, conf.C().UnitsConfig),
 		sv:     NewSupervisor(conf.C().Python.BinPath, conf.C().Python.WrapperPath),
 	}
 	a.chains.Reload()