diff --git a/partner-masterpulsa-voucher.js b/partner-masterpulsa-voucher.js
index b793463..cba6914 100644
--- a/partner-masterpulsa-voucher.js
+++ b/partner-masterpulsa-voucher.js
@@ -138,7 +138,7 @@ function parsePaymentResponse(message) {
             retval.sn = data[9];
         }
         catch(err) {
-            retval.sn = retval.refnum;
+            retval.sn = rehashRefnum(retval.refnum);
         }
     }
 
@@ -162,14 +162,7 @@ function rehashRefnum(refnum) {
 }
 
 function reportPaymentSuccess(task, response) {
-    var sn = '';
-    if (response.sn) {
-        sn = response.sn;
-    } else {
-        sn = rehashRefnum(response.refnum);
-    }
-    
-    var message = 'SN=' + sn + '; ' + response.raw;
+    var message = 'SN=' + response.sn + '; ' + response.raw;
 
     logger.info('Report payment success to ST24', {task: task, response: response});