diff --git a/server/web3sign/controllers/activate721nft.js b/server/web3sign/controllers/activate721nft.js
index 171c998..07d4a5b 100644
--- a/server/web3sign/controllers/activate721nft.js
+++ b/server/web3sign/controllers/activate721nft.js
@@ -14,7 +14,7 @@ async function activate721Nft(session) {
     const itemUniId = session.request('item_uniid');
     const itemId = session.request('item_id');
     const bc = serviceFactory.create('BlockChain');
-    const isMint = session.request('is_mint') == '1' ? true : false;
+    const isMint = session.request('is_mint') ? true : false;
     {
       const ret = await bc.init(netId);
       if (!ret) {