diff --git a/apps/portal/src/app/references/components/TDoc/fetchDocs/fetchTypeScriptDoc.ts b/apps/portal/src/app/references/components/TDoc/fetchDocs/fetchTypeScriptDoc.ts
index 6c3e05bd878..91e61fa072d 100644
--- a/apps/portal/src/app/references/components/TDoc/fetchDocs/fetchTypeScriptDoc.ts
+++ b/apps/portal/src/app/references/components/TDoc/fetchDocs/fetchTypeScriptDoc.ts
@@ -1,6 +1,7 @@
 import { transform } from "typedoc-better-json";
 
 let v5Prom: Promise<ReturnType<typeof transform>> | null = null;
+type TransformArg = Parameters<typeof transform>[0];
 
 export async function fetchTypeScriptDoc() {
   // v5 case (default)
@@ -12,8 +13,7 @@ export async function fetchTypeScriptDoc() {
       "../../../../../../../../packages/thirdweb/typedoc/documentation.json"
     );
 
-    // @ts-expect-error - works fine!
-    return transform(doc);
+    return transform(doc.default as TransformArg);
   })();
   return v5Prom;
 }