diff --git a/back/methods/vn-user/renew-token.js b/back/methods/vn-user/renew-token.js
index fb99992bf..ee50d06d4 100644
--- a/back/methods/vn-user/renew-token.js
+++ b/back/methods/vn-user/renew-token.js
@@ -22,7 +22,7 @@ module.exports = Self => {
         const tokenId = ctx.req.accessToken.id;
 
         const now = new Date();
-        const differenceMilliseconds = now - created;
+        const differenceMilliseconds = now - new Date(created);
         const differenceSeconds = Math.floor(differenceMilliseconds / 1000);
 
         const accessTokenConfig = await models.AccessTokenConfig.findOne({fields: ['renewPeriod']});