diff --git a/lib/src/widgets/embeds.dart b/lib/src/widgets/embeds.dart
index 8cfe2657..8d72cd5b 100644
--- a/lib/src/widgets/embeds.dart
+++ b/lib/src/widgets/embeds.dart
@@ -6,6 +6,8 @@ import '../models/themes/quill_icon_theme.dart';
 import 'controller.dart';
 
 abstract class EmbedBuilder {
+  const EmbedBuilder();
+
   String get key;
   bool get expanded => true;