diff --git a/lib/classes/shopAffiliate.class.php b/lib/classes/shopAffiliate.class.php
index e4b08c2c9..09828af97 100644
--- a/lib/classes/shopAffiliate.class.php
+++ b/lib/classes/shopAffiliate.class.php
@@ -73,7 +73,8 @@ public static function calculateBonus($order_or_id, $credit_rate = null)
         $curm = new shopCurrencyModel();
         $order_currency = isset($order['currency']) ? $order['currency'] : null;
         $def_cur = wa('shop')->getConfig()->getCurrency(true);
-        $affiliatable_total = $curm->convert(ifset($order['total'], 0) - ifset($order['shipping'], 0), ifempty($order_currency, $def_cur), $def_cur);
+        $storefront_cur = wa('shop')->getConfig()->getCurrency(false);
+        $affiliatable_total = $curm->convert(ifset($order['total'], 0) - ifset($order['shipping'], 0), ifempty($order_currency, $storefront_cur), $def_cur);
 
         $product_types = wa()->getSetting('affiliate_product_types', '', 'shop');
         if (!empty($product_types)) {