diff --git a/src/utils/blog.ts b/src/utils/blog.ts
index 9f58afb..af54638 100644
--- a/src/utils/blog.ts
+++ b/src/utils/blog.ts
@@ -11,7 +11,7 @@ const getNormalizedPost = async (post: CollectionEntry<'blog'>): Promise<Post> =
 
   return {
     id: id,
-    slug: cleanSlug(slug.split('/').pop() ?? ''),
+    slug: cleanSlug(slug.split('/').pop()),
 
     publishDate: new Date(publishDate),
     category: cleanSlug(category),
diff --git a/src/utils/permalinks.ts b/src/utils/permalinks.ts
index c6dcb63..0db7970 100644
--- a/src/utils/permalinks.ts
+++ b/src/utils/permalinks.ts
@@ -14,7 +14,7 @@ const createPath = (...params: string[]) => {
 
 const BASE_PATHNAME = SITE.basePathname;
 
-export const cleanSlug = (text: string) =>
+export const cleanSlug = (text = '') =>
   trimSlash(text)
     .split('/')
     .map((slug) => slugify(slug))