diff --git a/packages/medusa/src/api/routes/store/carts/__tests__/update-cart.js b/packages/medusa/src/api/routes/store/carts/__tests__/update-cart.js
index 6bc1f081f6..34f22237da 100644
--- a/packages/medusa/src/api/routes/store/carts/__tests__/update-cart.js
+++ b/packages/medusa/src/api/routes/store/carts/__tests__/update-cart.js
@@ -45,7 +45,8 @@ describe("POST /store/carts/:id", () => {
       expect(CartServiceMock.setRegion).toHaveBeenCalledTimes(1)
       expect(CartServiceMock.setRegion).toHaveBeenCalledWith(
         IdMap.getId("emptyCart"),
-        IdMap.getId("testRegion")
+        IdMap.getId("testRegion"),
+        undefined
       )
     })
 
diff --git a/packages/medusa/src/models/__mocks__/order.js b/packages/medusa/src/models/__mocks__/order.js
index 113b2586c0..1c40847e7c 100644
--- a/packages/medusa/src/models/__mocks__/order.js
+++ b/packages/medusa/src/models/__mocks__/order.js
@@ -380,7 +380,7 @@ export const OrderModelMock = {
       orders.orderToRefund.payment_status = "captured"
       return Promise.resolve(orders.orderToRefund)
     }
-    return Promise.resolve()
+    return Promise.resolve({ fulfillments: [] })
   }),
   deleteOne: jest.fn().mockReturnValue(Promise.resolve()),
   startSession: jest.fn().mockReturnValue(