diff --git a/src/not_found.njk b/src/404.njk
similarity index 83%
rename from src/not_found.njk
rename to src/404.njk
index 0eed7a21..3553c5bc 100644
--- a/src/not_found.njk
+++ b/src/404.njk
@@ -1,9 +1,9 @@
 ---
 layout: misc/base
-title: Page Not Found
+title: 404:Page Not Found
 h1: Page Not Found
 eleventyExcludeFromCollections: true
-permalink: /not_found.html
+permalink: /404.html
 ---
 
 <p>Oops! Either the page you are looking for does not exist, or it has been moved to a diffrent part of this site.</p>