diff --git a/wake/actions/cart/addItems.ts b/wake/actions/cart/addItems.ts
index 30325ddf9..65a80e188 100644
--- a/wake/actions/cart/addItems.ts
+++ b/wake/actions/cart/addItems.ts
@@ -44,7 +44,7 @@ const action = async (
   const checkoutId = data.checkout?.checkoutId;
 
   if (cartId !== checkoutId) {
-    setCartCookie(ctx.response.headers, checkoutId);
+    setCartCookie(ctx.response.headers, cartId);
   }
 
   return data.checkout ?? {};