diff --git a/lib/use-collections-page.js b/lib/use-collections-page.js
index e2130a2..e2b24f1 100644
--- a/lib/use-collections-page.js
+++ b/lib/use-collections-page.js
@@ -5,7 +5,7 @@ import { VOCAB, collectionDisplayName } from './collection-vocabulary.js';
 /**
  * Card/collection page state and handlers (god-component split).
  */
-export function useCollectionsPage({ user, authLoading }) {
+export function useCollectionsPage({ user = null, authLoading = true } = {}) {
   const router = useRouter();
 
   useEffect(() => {