diff --git a/back/models/vn-user.js b/back/models/vn-user.js
index c7fe3012f..e000aa4c7 100644
--- a/back/models/vn-user.js
+++ b/back/models/vn-user.js
@@ -126,12 +126,7 @@ module.exports = function (Self) {
     });
     Self.signInValidate = async (user, userToken, token, ctx) => {
         const [[key, value]] = Object.entries(Self.userUses(user));
-        const where = Self.userUses(user);
-        const vnUser = await Self.findOne({
-            fields: ['id', 'username', 'email'],
-            where
-        });
-        const isOwner = userToken[key].toLowerCase() === vnUser[key].toLowerCase();
+        const isOwner = Self.rawSql(`SELECT ? = ? `, [userToken[key], value]);
         await Self.app.models.SignInLog.create({
             token: token.id,
             userFk: userToken.id,