diff --git a/paypal.php b/paypal.php
index 502868ee..7daab54f 100755
--- a/paypal.php
+++ b/paypal.php
@@ -2322,12 +2322,21 @@ public function getPartnerInfo()
         return $response;
     }
 
-    public static function getPrecision()
+    public static function getPrecision($currency = null)
     {
         if (version_compare(_PS_VERSION_, '1.7.7', '<')) {
             return _PS_PRICE_DISPLAY_PRECISION_;
         } else {
-            return Context::getContext()->getComputingPrecision();
+            if ($currency instanceof Currency && Validate::isLoadedObject($currency)) {
+                $context = Context::getContext()->cloneContext();
+                $context->currency = $currency;
+                $precision = $context->getComputingPrecision();
+                unset($context);
+
+                return $precision;
+            } else {
+                return Context::getContext()->getComputingPrecision();
+            }
         }
     }
 
@@ -2345,7 +2354,7 @@ public static function getDecimal($isoCurrency = null)
             $isoCurrency = $paypal->getPaymentCurrencyIso();
         }
 
-        $precision = self::getPrecision();
+        $precision = self::getPrecision(new Currency(Currency::getIdByIsoCode($isoCurrency)));
 
         if (in_array($isoCurrency, $currency_wt_decimal) || ($precision == 0)) {
             return (int) 0;
diff --git a/services/Order/RefundAmountCalculator.php b/services/Order/RefundAmountCalculator.php
index 1862af29..bfc15613 100644
--- a/services/Order/RefundAmountCalculator.php
+++ b/services/Order/RefundAmountCalculator.php
@@ -32,7 +32,6 @@
 }
 
 use Order;
-use PayPal;
 
 class RefundAmountCalculator
 {
@@ -50,7 +49,7 @@ public function calculate($params)
         }
 
         foreach ($params['productList'] as $product) {
-            $amount += \Tools::ps_round($product['amount'], PayPal::getPrecision());
+            $amount += (float) $product['amount'];
         }
 
         if (false == empty($params['partialRefundShippingCost'])) {