diff --git a/Installation.md b/Installation.md
index b50db74..38d5b76 100644
--- a/Installation.md
+++ b/Installation.md
@@ -52,7 +52,7 @@ pm2 stop uptime-kuma
 
 Browse to http://localhost:3001 after started.
 
-### (Optional) One more step for Reverse Proxy
+## (Optional) One more step for Reverse Proxy
 
 This is optional for someone who want to do reverse proxy.