diff --git a/README.md b/README.md
index 490e200..8cd80c2 100644
--- a/README.md
+++ b/README.md
@@ -5,7 +5,7 @@
 
 #### 组件工具
 1. 安装
-> go install myschools.me/suguo/norm/my:latest
+> go install myschools.me/suguo/norm/my@latest
 2. 使用
 > my -dl mysql
 
diff --git a/mysql/mysql.go b/mysql/mysql.go
index 217d994..870fe81 100644
--- a/mysql/mysql.go
+++ b/mysql/mysql.go
@@ -34,7 +34,8 @@ func New() (*gorm.DB, error) {
 		return _db, nil
 	}
 
-	_db, err := gorm.Open(mysql.Open(_conf.ConnString), &gorm.Config{
+	var err error
+	_db, err = gorm.Open(mysql.Open(_conf.ConnString), &gorm.Config{
 		SkipDefaultTransaction: true,
 		Logger:                 logger.Default.LogMode(logger.Silent),
 	})