diff --git a/lib/widgets/message_list.dart b/lib/widgets/message_list.dart
index 625f969329..51178537a3 100644
--- a/lib/widgets/message_list.dart
+++ b/lib/widgets/message_list.dart
@@ -524,6 +524,7 @@ class DateSeparator extends StatelessWidget {
   //   - opacity 0.15
   static const _line = BorderSide(
     width: 0,
+    // TODO(#95) in dark theme, use white, following web
     color: Colors.black);
 
   @override