diff --git a/docker/caddy/Caddyfile b/docker/caddy/Caddyfile
index b8e887ac..72ab005a 100644
--- a/docker/caddy/Caddyfile
+++ b/docker/caddy/Caddyfile
@@ -2,7 +2,7 @@
 	admin 0.0.0.0:2019
 }
 
-{$PRIMARY_DOMAIN:caddyproxymanager.com} {
-	header Strict-Transport-Security "max-age=63072000"
-	respond "Caddy Proxy Manager is running" 200
+# Default HTTP-only site to avoid certificate errors on startup
+http://{$PRIMARY_DOMAIN:caddyproxymanager.com}, http://localhost {
+	respond "Caddy Proxy Manager is running - configure proxy hosts via the web interface" 200
 }