diff --git a/docs/404.md b/docs/404.md
index 5f320f0e9..cea8b4285 100644
--- a/docs/404.md
+++ b/docs/404.md
@@ -1,6 +1,5 @@
 ---
-title: "404"
-permalink: /404
+permalink: /404.html
 ---
 
 {% if page.language == "zh" %}