diff --git a/src/utils/slugify.ts b/src/utils/slugify.ts
index a33c2d8..83bc73a 100644
--- a/src/utils/slugify.ts
+++ b/src/utils/slugify.ts
@@ -6,7 +6,7 @@ const slugger = GithubSlugger.slug;
 export const slugifyStr = (str: string) => slugger(str);
 
 const slugify = (frontmatter: Frontmatter) =>
-  frontmatter.slug ? frontmatter.slug : slugger(frontmatter.title);
+  frontmatter.slug ? slugger(frontmatter.slug) : slugger(frontmatter.title);
 
 export const slufigyAll = (arr: string[]) => arr.map((str) => slugifyStr(str));