diff --git a/lib/src/models/config/toolbar/buttons/select_header_style.dart b/lib/src/models/config/toolbar/buttons/select_header_style.dart
index 6e70c9eb..fb2acc1f 100644
--- a/lib/src/models/config/toolbar/buttons/select_header_style.dart
+++ b/lib/src/models/config/toolbar/buttons/select_header_style.dart
@@ -29,12 +29,14 @@ class QuillToolbarSelectHeaderStyleButtonsOptions
   });
 
   /// Default value:
+  /// ```dart
   /// const [
   ///   Attribute.header,
   ///   Attribute.h1,
   ///   Attribute.h2,
   ///   Attribute.h3,
   /// ]
+  /// ```
   final List<Attribute>? attributes;
 
   /// By default we will the toolbar axis from [QuillToolbarConfigurations]