diff --git a/talonone-service/src/handlers/effects/cart/setDiscount.ts b/talonone-service/src/handlers/effects/cart/setDiscount.ts
index 04d8aa1..1892258 100644
--- a/talonone-service/src/handlers/effects/cart/setDiscount.ts
+++ b/talonone-service/src/handlers/effects/cart/setDiscount.ts
@@ -59,7 +59,7 @@ const setDiscountHandler = (
     slug: nameToSlug(name),
     taxCategory: {
       typeId: 'tax-category',
-      id: taxCategoryId
+      key: taxCategoryId
     }
   }
 }