diff --git a/lib/shopify/index.ts b/lib/shopify/index.ts
index 4de85f29a..677b4dd58 100644
--- a/lib/shopify/index.ts
+++ b/lib/shopify/index.ts
@@ -122,7 +122,7 @@ const reshapeCart = (cart: ShopifyCart): Cart => {
   if (!cart.cost?.totalTaxAmount) {
     cart.cost.totalTaxAmount = {
       amount: '0.0',
-      currencyCode: 'USD'
+      currencyCode: cart.cost.totalAmount.currencyCode
     };
   }