diff --git a/web/dart/navbar.dart b/web/dart/navbar.dart
index c23afbd..4fd5af4 100644
--- a/web/dart/navbar.dart
+++ b/web/dart/navbar.dart
@@ -108,7 +108,6 @@ Future<Element> makeThemeChanger() async {
     ..append(Element.a()
       ..attributes['href'] = 'javascript:void(0)'
       ..append(Element.span()
-        ..classes.add('fa-stack')
         ..style.verticalAlign = 'top'
         ..append(makeIcon(icons['theme']))))
     ..append(Element.ul()