diff --git a/pkg/bbgo/persistence.go b/pkg/bbgo/persistence.go
index b350f108d..7aaa95db9 100644
--- a/pkg/bbgo/persistence.go
+++ b/pkg/bbgo/persistence.go
@@ -129,11 +129,7 @@ func newTypeValueInterface(typ reflect.Type) interface{} {
 	}
 }
 
-func loadPersistenceFields(obj interface{}, persistence service.PersistenceService) error {
-	id := callID(obj)
-	if len(id) == 0 {
-		return fmt.Errorf("object does not provide ID() method for persistency")
-	}
+func loadPersistenceFields(obj interface{}, id string, persistence service.PersistenceService) error {
 
 	return iterateFieldsByTag(obj, "persistence", func(tag string, field reflect.StructField, value reflect.Value) error {
 		newValueInf := newTypeValueInterface(value.Type())
@@ -155,12 +151,7 @@ func loadPersistenceFields(obj interface{}, persistence service.PersistenceServi
 	})
 }
 
-func storePersistenceFields(obj interface{}, persistence service.PersistenceService) error {
-	id := callID(obj)
-	if len(id) == 0 {
-		return fmt.Errorf("object does not provide ID() method for persistency")
-	}
-
+func storePersistenceFields(obj interface{}, id string, persistence service.PersistenceService) error {
 	return iterateFieldsByTag(obj, "persistence", func(tag string, ft reflect.StructField, fv reflect.Value) error {
 		inf := fv.Interface()
 
diff --git a/pkg/bbgo/persistence_test.go b/pkg/bbgo/persistence_test.go
index a14f503ae..9e4efadce 100644
--- a/pkg/bbgo/persistence_test.go
+++ b/pkg/bbgo/persistence_test.go
@@ -42,6 +42,11 @@ func preparePersistentServices() []service.PersistenceService {
 	return pss
 }
 
+func Test_callID(t *testing.T) {
+	id := callID(&TestStruct{})
+	assert.NotEmpty(t, id)
+}
+
 func Test_storePersistenceFields(t *testing.T) {
 	var pss = preparePersistentServices()
 
@@ -56,7 +61,8 @@ func Test_storePersistenceFields(t *testing.T) {
 
 	for _, ps := range pss {
 		t.Run(reflect.TypeOf(ps).Elem().String(), func(t *testing.T) {
-			err := storePersistenceFields(a, ps)
+			id := callID(a)
+			err := storePersistenceFields(a, id, ps)
 			assert.NoError(t, err)
 
 			var i int64
@@ -73,7 +79,7 @@ func Test_storePersistenceFields(t *testing.T) {
 			assert.Equal(t, fixedpoint.NewFromFloat(3343.0), p.AverageCost)
 
 			var b = &TestStruct{}
-			err = loadPersistenceFields(b, ps)
+			err = loadPersistenceFields(b, id, ps)
 			assert.NoError(t, err)
 			assert.Equal(t, a.Integer, b.Integer)
 			assert.Equal(t, a.Integer2, b.Integer2)