diff --git a/partner-simplepay.js b/partner-simplepay.js
index b1ed446..354000f 100644
--- a/partner-simplepay.js
+++ b/partner-simplepay.js
@@ -90,7 +90,7 @@ function _composeMessageFromResponseData(responseDataObj) {
     const msg = _getPropertyFromObjectSafe(responseDataObj, 'message');
     const balance = _getPropertyFromObjectSafe(responseDataObj, 'balance');
     const timestamp = _getPropertyFromObjectSafe(responseDataObj, 'timestamp');
-    const price = _getPropertyFromObjectSafe(response.data, 'harga');
+    const price = _getPropertyFromObjectSafe(responseDataObj, 'harga');
 
     let messages = [];