diff --git a/CRM/Report/Form/Contribute/TaiwanTax.php b/CRM/Report/Form/Contribute/TaiwanTax.php
index 15a3fd8ab..c5f9b6a8f 100644
--- a/CRM/Report/Form/Contribute/TaiwanTax.php
+++ b/CRM/Report/Form/Contribute/TaiwanTax.php
@@ -285,7 +285,7 @@ function postProcess() {
     parent::postProcess();
   }
 
-  function endPostProcess($rows) {
+  function endPostProcess(&$rows = NULL) {
     if ($this->_outputMode == 'csv') {
       $year = $rows[0]['civicrm_contribution_receive_date'];
       CRM_Report_Utils_Report::export2xls($this, $rows, $year . '_' . ts('Your SIC Code'). '.xlsx');