diff --git a/demo/cos-auth.js b/demo/cos-auth.js
index 5e48244..8be0834 100644
--- a/demo/cos-auth.js
+++ b/demo/cos-auth.js
@@ -119,8 +119,8 @@
     };
 
     if(typeof module === 'object'){
-        module.exports = CryptoJS;
+        module.exports = CosAuth;
     }else{
         window.CosAuth = CosAuth;
     }
-})();
\ No newline at end of file
+})();