diff --git a/partner-kospinjasa.js b/partner-kospinjasa.js
index ceb63d8..c0105ba 100644
--- a/partner-kospinjasa.js
+++ b/partner-kospinjasa.js
@@ -61,7 +61,7 @@ function topupRequestSoap(task, params, retry) {
 
         logger.info('Requesting to service', {url: config.h2h_out.partner, params: params});
 
-        soapClient.billpayment({ inputCheck: params }, function(err, result) {
+        soapClient.apih2h.apih2hPort.billpayment({ inputCheck: params }, function(err, result) {
 
             logger.info('Got response', {lastRequest: soapClient.lastRequest});