diff --git a/src/layouts/Blog.astro b/src/layouts/Blog.astro
index 82a6d44..a204546 100644
--- a/src/layouts/Blog.astro
+++ b/src/layouts/Blog.astro
@@ -2,7 +2,7 @@
 import BaseLayout from "./BaseLayout.astro";
 const { frontmatter } = Astro.props;
 const hasTags = frontmatter.tags && frontmatter.tags.length > 0;
-const imgLink = `${Astro.site.origin}/og/${Astro.props.post.slug}.png`;
+const imgLink = `${Astro.site.origin}/og/${frontmatter.slug}.png`;
 ---
 
 <BaseLayout imgLink={imgLink}>
diff --git a/src/pages/about.md b/src/pages/about.md
index d1ce1e7..89c22bb 100644
--- a/src/pages/about.md
+++ b/src/pages/about.md
@@ -4,6 +4,7 @@ title: "Hello World"
 subtitle: "Things I've learned from saying Hello to the world"
 author: Andrew
 tags: ["one", "two", "three"]
+slug: "hello-world"
 ---
 
 ![Example image](/og/index.png)