diff --git a/examples/with-markdoc/src/pages/index.astro b/examples/with-markdoc/src/pages/index.astro
index 04cef4cad4..891b344de8 100644
--- a/examples/with-markdoc/src/pages/index.astro
+++ b/examples/with-markdoc/src/pages/index.astro
@@ -3,6 +3,9 @@ import { getEntry } from 'astro:content';
 import Layout from '../layouts/Layout.astro';
 
 const intro = await getEntry('docs', 'intro');
+if (!intro) {
+	return Astro.redirect('/404');
+}
 const { Content } = await intro.render();
 ---