diff --git a/public/index.php b/public/index.php
index 0a40cbf..db2f4e9 100644
--- a/public/index.php
+++ b/public/index.php
@@ -10,7 +10,7 @@ require_once __DIR__ . '/../vendor/autoload.php';
 
 $request = Request::createFromGlobals();
 $path = $request->getPathInfo();
-$scheme = $request->getScheme();
+$scheme = 'https';
 $host = $request->getHost();
 $base = "{$scheme}://{$host}/";
 
@@ -25,8 +25,8 @@ $response = match ($path) {
     '/uuid/v4' => \response(Uuid::v4()->toString()),
     '/uuid/v6' => \response(Uuid::v6()->toString()),
     '/uuid/v7' => response(Uuid::v7()->toString()),
-    '/ulid' => response(Ulid::generate()),
-    '/' => response(<<<TXT
+    '/ulid' => \response(Ulid::generate()),
+    '/' => \response(<<<TXT
         UUID/ULID Webservice
 
         Available Endpoints:
@@ -51,6 +51,7 @@ $response = match ($path) {
           /ulid      - Generate a ULID
             curl {$base}ulid
 
+            source: https://git.hannover.ccc.de/lubiana/uuid
         TXT
     ),
     default => new RedirectResponse("/", 301),