diff --git a/web/dart/reorganize_html.dart b/web/dart/reorganize_html.dart
index a009c85..07b8046 100644
--- a/web/dart/reorganize_html.dart
+++ b/web/dart/reorganize_html.dart
@@ -13,7 +13,7 @@ Future<Element> makeHeader() async {
       ..attributes['heigh'] = '150px'
       ..attributes['width'] = '150px')
     ..append(querySelector('h1'));
-  var subt = querySelector('.subtitle');
+  final subt = header.querySelector('.subtitle');
   if (subt != null) {
     header.append(subt);
   }