diff --git a/website_coupon/controllers/main.py b/website_coupon/controllers/main.py
index 72bf1b616..f01032689 100644
--- a/website_coupon/controllers/main.py
+++ b/website_coupon/controllers/main.py
@@ -113,8 +113,19 @@ class WebsiteCoupon(http.Controller):
                                 return request.redirect("/shop/cart?coupon_not_available=3")
                         elif type == 'percentage':
                             # coupon type is percentage -------------------------------------
-                            amount_final = (voucher_val/100) * order.amount_total
-                            res = coupon_product.product_tmpl_id.write({'list_price': -amount_final})
+                            if voucher_type == 'product':
+                                for line in order.order_line:
+                                    if line.product_id.name == categ_id.name:
+                                        amount_final = (voucher_val / 100) * line.price_total
+                                        break
+                            elif voucher_type == 'category':
+                                amount_final = 0
+                                for line in order.order_line:
+                                    if line.product_id.categ_id.name == product_id.name:
+                                        amount_final += (voucher_val / 100) * line.price_total
+                            elif voucher_type == 'all':
+                                amount_final = (voucher_val/100) * order.amount_total
+                        res = coupon_product.product_tmpl_id.write({'list_price': -amount_final})
                         value = order._cart_update(product_id=coupon_product.id, set_qty=1, add_qty=1)
 
                         # updating coupon balance--------------