diff --git a/src/Command/FromDirectory.php b/src/Command/FromDirectory.php
index bbefdd4..b144066 100644
--- a/src/Command/FromDirectory.php
+++ b/src/Command/FromDirectory.php
@@ -55,8 +55,7 @@ class FromDirectory extends Command
         if ($input->hasOption('prefix') and $input->getOption('prefix')) {
             $context->set('default_prefix', $input->getOption('prefix'));
         }
-        $context->set('topnav', $input->getOption('topnav'));
-        $context->set('topnav_spip', $input->getOption('topnav_spip'));
+        $context->header->set('topnav', $input->getOption('topnav_spip') ? Context::TOPNAV_SPIP : $input->getOption('topnav'));
         $context->phpdocumentor->options->set('force', $input->getOption('force'));
 
         $this->pipeline($context);
diff --git a/src/Command/FromFile.php b/src/Command/FromFile.php
index 4f634d5..6391588 100644
--- a/src/Command/FromFile.php
+++ b/src/Command/FromFile.php
@@ -78,8 +78,7 @@ https://git.spip.net/spip-contrib-extensions/champs_extras_core@master;cextras
             $context->set('only_this_prefix', $input->getOption('outputs'));
         }
 
-        $context->set('topnav', $input->getOption('topnav'));
-        $context->set('topnav_spip', $input->getOption('topnav_spip'));
+        $context->header->set('topnav', $input->getOption('topnav_spip') ? Context::TOPNAV_SPIP : $input->getOption('topnav'));
         $context->phpdocumentor->options->set('force', $input->getOption('force'));
 
         $autodoc = new AutodocFile(
diff --git a/src/Command/FromGit.php b/src/Command/FromGit.php
index f87f179..02bfa43 100644
--- a/src/Command/FromGit.php
+++ b/src/Command/FromGit.php
@@ -68,8 +68,7 @@ class FromGit extends Command
         $context->directory->set('output', $input->getOption('output'));
         $context->set('default_prefix', $input->getOption('prefix') ?: pathinfo($source, \PATHINFO_FILENAME));
 
-        $context->set('topnav', $input->getOption('topnav'));
-        $context->set('topnav_spip', $input->getOption('topnav_spip'));
+        $context->header->set('topnav', $input->getOption('topnav_spip') ? Context::TOPNAV_SPIP : $input->getOption('topnav'));
         $context->phpdocumentor->options->set('force', $input->getOption('force'));
 
         $branch = $input->getOption('branch');
diff --git a/src/Command/MakeIndex.php b/src/Command/MakeIndex.php
index e77bfd3..8a1ae61 100644
--- a/src/Command/MakeIndex.php
+++ b/src/Command/MakeIndex.php
@@ -43,8 +43,7 @@ class MakeIndex extends Command
         if ($input->getOption('outputs')) {
             $context->directory->set('output_base', $input->getOption('outputs'));
         }
-        $context->set('topnav', $input->getOption('topnav'));
-        $context->set('topnav_spip', $input->getOption('topnav_spip'));
+        $context->header->set('topnav', $input->getOption('topnav_spip') ? Context::TOPNAV_SPIP : $input->getOption('topnav'));
 
         $this->pipeline($context);
 
diff --git a/src/Context.php b/src/Context.php
index 2f72365..48f5723 100644
--- a/src/Context.php
+++ b/src/Context.php
@@ -9,6 +9,8 @@ use Symfony\Component\Console\Style\SymfonyStyle;
 
 class Context extends Container
 {
+    const TOPNAV_SPIP = '//boussole.spip.net/?page=spipnav.js&lang=fr';
+
     public function __construct(InputInterface $input, OutputInterface $output)
     {
         $this->set('io', new SymfonyStyle($input, $output));
@@ -17,8 +19,13 @@ class Context extends Container
         $this->set('php', PHP_BINARY);
         $this->set('default_prefix', 'default');
         $this->set('only_this_prefix', null);
-        $this->set('topnav', null);
-        $this->set('topnav_spip', null);
+
+        $this->set('header', new Container([
+            'title' => 'SPIP Code',
+            'subtitle' => 'Documentation du code de SPIP et de ses plugins',
+            'url' => 'https://code.spip.net/',
+            'topnav' => null,
+        ]));
 
         $cwd = getcwd();
         $var = $cwd . '/var';
diff --git a/src/Stage/IndexStage.php b/src/Stage/IndexStage.php
index a2f8590..a47d8e6 100644
--- a/src/Stage/IndexStage.php
+++ b/src/Stage/IndexStage.php
@@ -99,19 +99,11 @@ class IndexStage implements StageInterface {
             $organizations[$other] = $other;
         }
 
-        $topnav = match (true) {
-            !$context->empty('topnav_spip') => PhpDocumentorConfigStage::TOPNAV_SPIP,
-            !$context->empty('topnav') => $context->get('topnav'),
-            default => null,
-        };
-
         $template = new Template($context->directory->templates, $context->directory->output_base);
         $template->generate('index.html.twig', [
-            'title' => 'SPIP Code',
-            'subtitle' => 'Documentation du code de SPIP et ses plugins',
+            'header' => $context->header,
             'groups' => $groups,
             'organizations' => $organizations,
-            'topnav' => $topnav,
         ]);
     }
 
diff --git a/src/Stage/PhpDocumentorConfigStage.php b/src/Stage/PhpDocumentorConfigStage.php
index d594d81..6cece98 100644
--- a/src/Stage/PhpDocumentorConfigStage.php
+++ b/src/Stage/PhpDocumentorConfigStage.php
@@ -16,7 +16,6 @@ use Symfony\Component\Filesystem\Filesystem;
  */
 class PhpDocumentorConfigStage implements StageInterface
 {
-    const TOPNAV_SPIP = '//boussole.spip.net/?page=spipnav.js&lang=fr';
 
     public function __invoke(Context $context): Context
     {
@@ -84,24 +83,13 @@ class PhpDocumentorConfigStage implements StageInterface
 
     private function generateConfig(Context $context) {
         $template = new Template($context->directory->templates, $context->directory->config);
-        $topnav = match (true) {
-            !$context->empty('topnav_spip') => $this::TOPNAV_SPIP,
-            !$context->empty('topnav') => $context->get('topnav'),
-            default => null,
-        };
-        // FIXME: externaliser en config ...
-        $header = new stdClass();
-        $header->title = 'SPIP Code';
-        $header->subtitle = 'Documentation du code de SPIP et ses plugins';
-        $header->url = 'https://code.spip.net/';
         $content = $template->render('phpdoc.xml.twig', [
             'title' => $context->title,
             'presentation' => $context->presentation,
             'package' => $context->package,
             'directory' => $context->directory,
             'git' => $context->has('git') ? $context->git : null,
-            'topnav' => $topnav,
-            'header' => $header
+            'header' => $context->header,
         ]);
         $file = 'phpdoc_' . ($context->package->prefix ?: $context->default_prefix) . '.xml';
         $template->write($file, $content);
diff --git a/templates/index.html.twig b/templates/index.html.twig
index 23b4eae..5aaf270 100644
--- a/templates/index.html.twig
+++ b/templates/index.html.twig
@@ -13,11 +13,11 @@
 		<link rel="stylesheet" href="autodoc.css" />
 		<link rel="shortcut icon" type="image/png" href="favicon.png" />
 
-		{%- if topnav %}
+		{%- if header.topnav %}
 		<script type="text/javascript">
 		(function() {
 		var d=document,g=d.createElement('script'),s=d.getElementsByTagName('script')[0];
-		g.type='text/javascript';g.defer=true;g.async=true;g.src="{{ topnav|raw }}";s.parentNode.insertBefore(g,s);
+		g.type='text/javascript';g.defer=true;g.async=true;g.src="{{ header.topnav|raw }}";s.parentNode.insertBefore(g,s);
 		})();
 		</script>
 		{%- endif -%}
@@ -27,13 +27,13 @@
 		<header class="autodoc-header" id="header">
 			<div class='autodoc-container'>
 				<div class="autodoc-title">
-					<h1>{{ title }}</h1>
+					<h1>{{ header.title }}</h1>
 				</div>
 			</div>
 		</header>
 		<div class="autodoc-navbar">
 			<div class="autodoc-container">
-				<strong class="autodoc-subtitle">{{ subtitle }}</strong>
+				<strong class="autodoc-subtitle">{{ header.subtitle }}</strong>
 			</div>
 		</div>
 
diff --git a/templates/phpdoc.xml.twig b/templates/phpdoc.xml.twig
index 4d67852..c4b6a1a 100644
--- a/templates/phpdoc.xml.twig
+++ b/templates/phpdoc.xml.twig
@@ -56,7 +56,7 @@
     <setting name="package.url_documentation" value="{{ package.url_documentation }}"/>
     <setting name="package.url_development" value="{{ package.url_development }}" />
     <setting name="package.url_repository" value="{{ git.repositoryurl }}"/>
-    <setting name="js.topnav" value="{{ topnav }}"/>
+    <setting name="js.topnav" value="{{ header.topnav }}"/>
     <setting name="header.url" value="{{ header.url }}"/>
     <setting name="header.title" value="{{ header.title }}"/>
     <setting name="header.subtitle" value="{{ header.subtitle }}"/>