diff --git a/lib/model/cart.ts b/lib/model/cart.ts
index 1c055ca..e4e6bcc 100644
--- a/lib/model/cart.ts
+++ b/lib/model/cart.ts
@@ -6,6 +6,7 @@ export type PrivilegeCartData = {
     privilegeId: string;
     description: string;
     price: number;
+    amount: number;
     appliedPrivilegeDiscount: Discount | null;
 };
 
diff --git a/lib/utils/cart/privilegeDiscount.ts b/lib/utils/cart/privilegeDiscount.ts
index 8db36ab..54473fc 100644
--- a/lib/utils/cart/privilegeDiscount.ts
+++ b/lib/utils/cart/privilegeDiscount.ts
@@ -9,7 +9,7 @@ export function applyPrivilegeDiscounts(
     cartData.services.forEach(service => {
         service.tariffs.forEach(tariff => {
             tariff.privileges.forEach(privilege => {
-                const privilegeDiscount = findPrivilegeDiscount(privilege.privilegeId, privilege.price, discounts);
+                const privilegeDiscount = findPrivilegeDiscount(privilege.privilegeId, privilege.amount, discounts);
                 if (!privilegeDiscount) return;
 
                 const discountAmount = privilege.price * (1 - findDiscountFactor(privilegeDiscount));