diff --git a/www/src/components/Note.astro b/www/src/components/Note.astro
index 12fc396bc..abbdb987b 100644
--- a/www/src/components/Note.astro
+++ b/www/src/components/Note.astro
@@ -1,6 +1,6 @@
 ---
 export interface Props {
-  title: string;
+  title?: string;
   type?: 'tip' | 'warning' | 'error'
 }
 const { type = 'tip', title } = Astro.props;
diff --git a/www/src/pages/blog/astro-repl.astro b/www/src/pages/blog/astro-repl.astro
index 91a6c3542..f79c7a1dd 100644
--- a/www/src/pages/blog/astro-repl.astro
+++ b/www/src/pages/blog/astro-repl.astro
@@ -13,7 +13,7 @@ let lang = 'en';
 
 <html lang={ lang ?? 'en' }>
   <head>
-    <BaseHead title={title} description={description} permalink={permalink} image="https://astro.build/assets/blog/astro-repl/astro-repl-social.jpg" />
+    <BaseHead title={title} description={description} canonicalURL={permalink} image="https://astro.build/assets/blog/astro-repl/astro-repl-social.jpg" />
     <link rel="stylesheet" href={Astro.resolve('../../scss/blog.css')} />
   </head>
 
diff --git a/www/src/pages/blog/index.astro b/www/src/pages/blog/index.astro
index 5ea37c043..410ac1727 100644
--- a/www/src/pages/blog/index.astro
+++ b/www/src/pages/blog/index.astro
@@ -11,7 +11,7 @@ let lang = 'en';
 
 <html lang={ lang ?? 'en' }>
   <head>
-    <BaseHead title={title} description={description} permalink={permalink} />
+    <BaseHead title={title} description={description} canonicalURL={permalink} />
     <link rel="stylesheet" href={Astro.resolve('../../scss/blog.css')} />
 
     <style>
diff --git a/www/src/pages/blog/introducing-astro.astro b/www/src/pages/blog/introducing-astro.astro
index cf57e685b..b95c9ff41 100644
--- a/www/src/pages/blog/introducing-astro.astro
+++ b/www/src/pages/blog/introducing-astro.astro
@@ -18,7 +18,7 @@ let lang = 'en';
 
 <html lang={ lang ?? 'en' }>
   <head>
-    <BaseHead title={title} description={description} permalink={permalink} />
+    <BaseHead title={title} description={description} canonicalURL={permalink} />
     <link rel="stylesheet" href={Astro.resolve('../../scss/blog.css')} />
   </head>
 
