diff --git a/packages/core/test/ebay-core.test.ts b/packages/core/test/ebay-core.test.ts
index a44e231..aa815f4 100644
--- a/packages/core/test/ebay-core.test.ts
+++ b/packages/core/test/ebay-core.test.ts
@@ -12,15 +12,18 @@ type IsExact<T, U> =
     : false;
 
 const getDefaultEbayItems = async () => fetchEbayItems("laptop");
-const getUnstableEbayItems = async (): Promise<
-  UnstableListingBuckets<EbayListingDetails>
-> => fetchEbayItems("laptop", 1000, {}, { hideUnstableResults: true });
+const unstableEbayItemsPromise = fetchEbayItems(
+  "laptop",
+  1000,
+  {},
+  { hideUnstableResults: true },
+);
 type _EbayDefaultReturn = Assert<
   IsExact<Awaited<ReturnType<typeof getDefaultEbayItems>>, EbayListingDetails[]>
 >;
 type _EbayUnstableReturn = Assert<
   IsExact<
-    Awaited<ReturnType<typeof getUnstableEbayItems>>,
+    Awaited<typeof unstableEbayItemsPromise>,
     UnstableListingBuckets<EbayListingDetails>
   >
 >;