diff --git a/web/app/themes/haiku-atelier-2024/src/scripts/lib/schemas/api/cart.ts b/web/app/themes/haiku-atelier-2024/src/scripts/lib/schemas/api/cart.ts
index 41b2652b..54f8bf0d 100755
--- a/web/app/themes/haiku-atelier-2024/src/scripts/lib/schemas/api/cart.ts
+++ b/web/app/themes/haiku-atelier-2024/src/scripts/lib/schemas/api/cart.ts
@@ -69,7 +69,7 @@ export const WCStoreCartTotalsSchema = v.object({
     v.transform(Number),
   ),
   total_shipping: v.pipe(
-    v.union([v.string(), v.number()]),
+    v.union([v.string(), v.number(), v.null()]),
     v.transform(n => n ? Number(n) : 0),
   ),
   total_shipping_tax: v.union([v.string(), v.null()]),