diff --git a/backend/src/routes/shippingAddresses.ts b/backend/src/routes/shippingAddresses.ts
index 441c08e..3cc09c5 100644
--- a/backend/src/routes/shippingAddresses.ts
+++ b/backend/src/routes/shippingAddresses.ts
@@ -1,7 +1,7 @@
 import { Router, Request, Response } from 'express';
 import { pool } from '../db';
 import { requireCustomer } from '../middleware/customerAuth';
-import { validateAddress, uspsConfigured } from '../usps';
+import { validateAddress, uspsConfigured, UspsValidationResult } from '../usps';
 
 const router = Router();
 
@@ -19,8 +19,8 @@ router.post('/', requireCustomer, async (req: Request, res: Response) => {
     return res.status(400).json({ error: 'fullName, addressLine1, city, state, and postalCode are required' });
   }
 
-  let uspsResult = { validated: false, deliverable: null as boolean | null, standardized: null as Record<string, unknown> | null, reason: undefined as string | undefined };
-  if ((country || 'US') === 'US') {
+let uspsResult: UspsValidationResult = { validated: false, deliverable: null, standardized: null };  
+if ((country || 'US') === 'US') {
     uspsResult = await validateAddress({ addressLine1, addressLine2, city, state, postalCode });
   }