diff --git a/src/Service/InvoiceCreator.php b/src/Service/InvoiceCreator.php
index e5931062..695a9e2b 100644
--- a/src/Service/InvoiceCreator.php
+++ b/src/Service/InvoiceCreator.php
@@ -166,7 +166,8 @@ class InvoiceCreator
                 $discount = round($total['sell_price'] * $rate, 2);
                 break;
             case DiscountApply::OPL:
-                $discount = round($total['sell_price'] * 0.6 / 0.7 * $rate, 2);
+                // $discount = round($total['sell_price'] * 0.6 / 0.7 * $rate, 2);
+                $discount = round($total['sell_price'] * (1 - 1.5 / 0.7 * $rate), 2);
                 break;
         }