diff --git a/business/model/legacy.go b/business/model/legacy.go
index 018c2e5d0..168d4e654 100644
--- a/business/model/legacy.go
+++ b/business/model/legacy.go
@@ -3,7 +3,7 @@ package model
 type WeiXins struct {
 	ID        int    `orm:"column(id)" json:"id"`
 	JxStoreID int    `orm:"column(jxstoreid)" json:"storeID"`
-	OpenID    string `orm:"column(openid);size(70);unique;default(null)" json:"openID"`
+	OpenID    string `orm:"column(openid);size(70);unique;null" json:"openID"`
 	Tel       string `orm:"size(15);unique" json:"tel"`
 	ParentID  int    `orm:"column(parentid);default(-1)" json:"parentID"`
 	NickName  string `orm:"column(nickname);size(30)" json:"nickname"`