diff --git a/core/lib/Thelia/Action/Coupon.php b/core/lib/Thelia/Action/Coupon.php
index d9bbf4eb6..adf589578 100644
--- a/core/lib/Thelia/Action/Coupon.php
+++ b/core/lib/Thelia/Action/Coupon.php
@@ -136,24 +136,26 @@ class Coupon extends BaseAction implements EventSubscriberInterface
                     $consumedCoupons = array();
                 }
 
-                // Prevent accumulation of the same Coupon on a Checkout
-                $consumedCoupons[$event->getCode()] = $event->getCode();
+                if (!isset($consumedCoupons[$event->getCode()])) {
+                    // Prevent accumulation of the same Coupon on a Checkout
+                    $consumedCoupons[$event->getCode()] = $event->getCode();
 
-                $this->request->getSession()->setConsumedCoupons($consumedCoupons);
+                    $this->request->getSession()->setConsumedCoupons($consumedCoupons);
 
-                $totalDiscount = $this->couponManager->getDiscount();
+                    $totalDiscount = $this->couponManager->getDiscount();
 
-                $this->request
-                    ->getSession()
-                    ->getCart()
-                    ->setDiscount($totalDiscount)
-                    ->save();
-                $this->request
-                    ->getSession()
-                    ->getOrder()
-                    ->setDiscount($totalDiscount)
-                    // ->save()
-                ;
+                    $this->request
+                        ->getSession()
+                        ->getCart()
+                        ->setDiscount($totalDiscount)
+                        ->save();
+                    $this->request
+                        ->getSession()
+                        ->getOrder()
+                        ->setDiscount($totalDiscount)
+                        // ->save()
+                    ;
+                }
             }
         }
 
diff --git a/core/lib/Thelia/Coupon/Type/RemoveXPercent.php b/core/lib/Thelia/Coupon/Type/RemoveXPercent.php
index 32bc152f7..01ee7f0eb 100644
--- a/core/lib/Thelia/Coupon/Type/RemoveXPercent.php
+++ b/core/lib/Thelia/Coupon/Type/RemoveXPercent.php
@@ -103,8 +103,8 @@ class RemoveXPercent extends CouponAbstract
                 'Percentage must be inferior to 100'
             );
         }
-
-        $basePrice = $this->facade->getCartTotalPrice();
+        $taxCountry = $this->facade->getContainer()->get('thelia.taxEngine')->getDeliveryCountry();
+        $basePrice = $this->facade->getCart()->getTaxedAmount($taxCountry);
 
         return round($basePrice *  $this->percentage/100, 2);
     }
diff --git a/core/lib/Thelia/Model/Cart.php b/core/lib/Thelia/Model/Cart.php
index 0c30f2acf..507b1c2e2 100644
--- a/core/lib/Thelia/Model/Cart.php
+++ b/core/lib/Thelia/Model/Cart.php
@@ -76,17 +76,10 @@ class Cart extends BaseCart
 
     public function getTaxedAmount(Country $country)
     {
-        $taxCalculator = new Calculator();
-
         $total = 0;
 
         foreach($this->getCartItems() as $cartItem) {
-            $subtotal = $cartItem->getRealPrice();
-            /* we round it for the unit price, before the quantity factor */
-            $subtotal = round($taxCalculator->load($cartItem->getProduct(), $country)->getTaxedPrice($subtotal), 2);
-            $subtotal *= $cartItem->getQuantity();
-
-            $total += $subtotal;
+            $total += $cartItem->getRealTaxedPrice($country) * $cartItem->getQuantity();
         }
 
         $total -= $this->getDiscount();
diff --git a/core/lib/Thelia/Model/CartItem.php b/core/lib/Thelia/Model/CartItem.php
index 4e533f79d..1fe266aee 100644
--- a/core/lib/Thelia/Model/CartItem.php
+++ b/core/lib/Thelia/Model/CartItem.php
@@ -94,6 +94,11 @@ class CartItem extends BaseCartItem
         return $this->getPromo() == 1 ? $this->getPromoPrice() : $this->getPrice();
     }
 
+    public function getRealTaxedPrice(Country $country)
+    {
+        return $this->getPromo() == 1 ? $this->getTaxedPromoPrice($country) : $this->getTaxedPrice($country);
+    }
+
     public function getTaxedPrice(Country $country)
     {
         $taxCalculator = new Calculator();
diff --git a/local/modules/Colissimo/Config/thelia.sql b/local/modules/Colissimo/Config/thelia.sql
old mode 100644
new mode 100755
diff --git a/templates/frontOffice/default/order-invoice.html b/templates/frontOffice/default/order-invoice.html
index e1fb29b01..eebaa921b 100644
--- a/templates/frontOffice/default/order-invoice.html
+++ b/templates/frontOffice/default/order-invoice.html
@@ -266,7 +266,6 @@
                             {loop type="payment" name="payments" force_return="true"}
 
                                 {assign "paymentModuleId" $ID}
-
                                 {loop type="image" name="paymentspicture" source="module" source_id=$ID force_return="true" width="100" height="72"}
 
                                     <li>