diff --git a/lib/src/selection_dialog.dart b/lib/src/selection_dialog.dart
index ded2836..7c84254 100644
--- a/lib/src/selection_dialog.dart
+++ b/lib/src/selection_dialog.dart
@@ -15,7 +15,7 @@ class SelectionDialog extends StatefulWidget {
   final WidgetBuilder? emptySearchBuilder;
   final bool? showFlag;
   final double flagWidth;
-  final String headerText;
+  final String? headerText;
   final Decoration? flagDecoration;
   final Size? size;
   final bool hideSearch;