diff --git a/resources/views/pages/pdfs/purchase_order_table.blade.php b/resources/views/pages/pdfs/purchase_order_table.blade.php
index e96e6116..62f2f2d1 100644
--- a/resources/views/pages/pdfs/purchase_order_table.blade.php
+++ b/resources/views/pages/pdfs/purchase_order_table.blade.php
@@ -57,7 +57,7 @@
             $serviceCharge = $transaction->service_charge;
             if (isset($current_paid_amount)) {
                 $refundedServiceCharge = $subtotal + $serviceCharge - $current_paid_amount;
-                $serviceCharge = $serviceCharge - $refundedServiceCharge + $voucherDiscount;
+                $serviceCharge = $serviceCharge - $refundedServiceCharge - $voucherDiscount;
             }
         ?>
         <td class="right">{{ number_format($serviceCharge, 2) }}</td>