diff --git a/models/custom_migrations.go b/models/custom_migrations.go
index 86901c605..43dd57b4b 100644
--- a/models/custom_migrations.go
+++ b/models/custom_migrations.go
@@ -52,7 +52,7 @@ func syncTopicStruct(x *xorm.Engine) error {
 	return err
 }
 
-func deleteNotDisplayUser(x *xorm.Engine) error {
+func deleteNotDisplayUser(static *xorm.Engine) error {
 
 	sess := x.NewSession()
 	defer sess.Close()
@@ -62,7 +62,7 @@ func deleteNotDisplayUser(x *xorm.Engine) error {
 	for i, userRecord := range userList {
 		log.Info("delete zuzi user, i=" + fmt.Sprint(i) + " userName=" + userRecord.Name)
 		deleteSql := "delete from user_business_analysis where id=" + fmt.Sprint(userRecord.ID) + " and name='" + userRecord.Name + "'"
-		xStatistic.Exec(deleteSql)
+		static.Exec(deleteSql)
 	}
 
 	return nil