diff --git a/src/i18n/utils.ts b/src/i18n/utils.ts
index c173f0f..2eaa50a 100644
--- a/src/i18n/utils.ts
+++ b/src/i18n/utils.ts
@@ -22,12 +22,13 @@ export function parseSlug(id: string) {
   return [splitPath.join("/"), lang]
 }
 
-export function filterCollection<T extends { id: string, data: { draft: boolean, date: Date } }>(collection: T[], locale: string): T[] {
+export function filterCollection<T extends { id: string, data: { draft?: boolean, date?: Date } }>(collection: T[], locale: string): T[] {
   return collection.filter(post => {
     const [_, lang] = parseSlug(post?.id);
     if (post?.data?.draft) return false;
     return lang === locale;
   }).sort((a, b) => {
+    if (!a?.data?.date || !b?.data?.date) return 0;
     return (a?.data?.date > b?.data?.date) ? -1 : 1;
   });
 }