diff --git a/server/web3sign/controllers/nftunlock.js b/server/web3sign/controllers/nftunlock.js
index 0eccd05..bd0a2bf 100644
--- a/server/web3sign/controllers/nftunlock.js
+++ b/server/web3sign/controllers/nftunlock.js
@@ -31,7 +31,6 @@ async function nftUnlock(session) {
     const instance = bc.getInstanceByName('NFTLock');
 
     const transModel = session.createModel('Transaction');
-    const usedTokenIdModel = session.createModel('UsedTokenId');
 
     {
       if (!nftAddress) {