diff --git a/src/controllers/nft.controller.ts b/src/controllers/nft.controller.ts
index f2c4c31..60ddce2 100644
--- a/src/controllers/nft.controller.ts
+++ b/src/controllers/nft.controller.ts
@@ -165,7 +165,7 @@ class NftController extends BaseController {
     let rpcRes = await checkDiscordRole(user.address.toLowerCase(), guild, cfg.role)
     console.log('check result:', rpcRes)
     if (rpcRes.errcode) {
-      throw new ZError(rpcRes.errcode, `rpcRes.errmsg`)
+      throw new ZError(rpcRes.errcode, rpcRes.errmsg)
     }
     if (!rpcRes.data.result) {
       throw new ZError(14, 'had no role')