diff --git a/adventar/index.ts b/adventar/index.ts
index ba97d338..603d30d2 100644
--- a/adventar/index.ts
+++ b/adventar/index.ts
@@ -12,7 +12,7 @@ import { Mutex } from 'async-mutex';
 
 interface AdventarArticle {
   user: { uid: number; name: string; iconURI: string };
-  articleURI: string | null;
+  articleURI: 
 }
 
 interface AdventarCalendarSnapshot {