diff --git a/js/aofex.js b/js/aofex.js
index <HASH>..<HASH> 100644
--- a/js/aofex.js
+++ b/js/aofex.js
@@ -325,7 +325,11 @@ module.exports = class aofex extends Exchange {
         //         ]
         //     }
         //
-        const result = { 'info': response };
+        const result = {
+            'info': response,
+            'timestamp': undefined,
+            'datetime': undefined,
+        };
         const balances = this.safeValue (response, 'result', []);
         for (let i = 0; i < balances.length; i++) {
             const balance = balances[i];
aofex-fetchBalance-timestamp