diff --git a/packages/medusa/src/services/discount.js b/packages/medusa/src/services/discount.js
index 2b806f1c94..5e5c366ecb 100644
--- a/packages/medusa/src/services/discount.js
+++ b/packages/medusa/src/services/discount.js
@@ -75,6 +75,7 @@ class DiscountService extends BaseService {
    */
   validateDiscountRule_(discountRule) {
     const schema = Validator.object().keys({
+      id: Validator.string().optional(),
       description: Validator.string().optional(),
       type: Validator.string().required(),
       value: Validator.number()