diff --git a/lib/Payment.js b/lib/Payment.js
index feb2ca0..5a3fb93 100644
--- a/lib/Payment.js
+++ b/lib/Payment.js
@@ -723,14 +723,15 @@ class Payment {
       const md5Key = utils.genMD5(this.getAPISignKey());
       data = utils.createBufferFromBase64(data.req_info);
       let decoded;
-      const decipher = crypto.createDecipher('aes-256-ecb', md5Key);
+      const decipher = crypto.createDecipheriv('aes-256-ecb', md5Key, Buffer.alloc(0));
       decipher.setAutoPadding(true);
       decoded = decipher.update(data, 'binary', 'utf8');
       decoded += decipher.final('utf8');
-      const ret = JSON.parse(decoded);
-      return Promise.resolve({
-        parsedXMLData: originalData,
-        decryptedData: ret,
+      return utils.parseXML(decoded).then(ret =>{
+        return Promise.resolve({
+          parsedXMLData: originalData,
+          decryptedData: ret,
+        });
       });
     });
   }