diff --git a/model/lib/extensions/presentation_email_extension.dart b/model/lib/extensions/presentation_email_extension.dart
index 41f633719..86cbb8b09 100644
--- a/model/lib/extensions/presentation_email_extension.dart
+++ b/model/lib/extensions/presentation_email_extension.dart
@@ -70,7 +70,7 @@ extension PresentationEmailExtension on PresentationEmail {
     return '';
   }
 
-  Set<EmailAddress> get listEmailAddressSender => from.asSet()..addAll(replyTo.asSet());
+  Set<EmailAddress> get listEmailAddressSender => {...?from, ...?replyTo};
 
   PresentationEmail toggleSelect() {
     return copyWith(