diff --git a/src/components/PageHeader.astro b/src/components/PageHeader.astro
index ea76d61..eb52290 100644
--- a/src/components/PageHeader.astro
+++ b/src/components/PageHeader.astro
@@ -7,7 +7,9 @@ interface Props {
   isHome?: boolean | undefined;
 }
 
-const { title, isHome } = Astro.props;
+const isHome = Astro.props.isHome === true;
+
+const { title } = Astro.props;
 
 const Nav = isHome ? Fragment : 'nav';
 const Logo = isHome ? 'h1' : 'p';
diff --git a/src/pages/[...slug].astro b/src/pages/[...slug].astro
index 501cb6b..96a7915 100644
--- a/src/pages/[...slug].astro
+++ b/src/pages/[...slug].astro
@@ -14,8 +14,6 @@ export async function getStaticPaths() {
   );
 }
 
-type Props = Awaited<ReturnType<typeof getStaticPaths>>[number]['props'];
-
 const { entry } = Astro.props;
 const description = await getBlogDescription(entry);
 const { Content } = await entry.render();
diff --git a/src/pages/index.astro b/src/pages/index.astro
index de20d90..8dad143 100644
--- a/src/pages/index.astro
+++ b/src/pages/index.astro
@@ -10,6 +10,14 @@ import { getBlogDescription } from '../lib/get-blog-description';
 import { renderDateToHtml } from '../lib/render-date-to-html';
 import { renderYearMonthRangeToHtml } from '../lib/render-year-month-range-to-html';
 
+function toPrimaryItem(entry: CollectionEntry<'blog'>): DetailsListItem {
+  return {
+    title: entry.data.title,
+    link: `/${entry.slug}`,
+    meta: siteTitle,
+  };
+}
+
 const everylayoutEntry = await getEntry('blog', '20211011-publication-of-everylayout');
 
 const primaryItems = [
@@ -62,14 +70,6 @@ const primaryItems = [
   },
 ] satisfies DetailsListItem[];
 
-function toPrimaryItem(entry: CollectionEntry<'blog'>): DetailsListItem {
-  return {
-    title: entry.data.title,
-    link: `/${entry.slug}`,
-    meta: SITE_TITLE,
-  };
-}
-
 const projectItems = [
   {
     title: 'sdenv',