diff --git a/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart b/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart
index 003802b9..62a0c427 100644
--- a/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart
+++ b/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart
@@ -5,7 +5,7 @@ import 'package:stream_chat_persistence/src/db/moor_chat_database.dart';
 extension ReactionEntityX on ReactionEntity {
   /// Maps a [ReactionEntity] into [Reaction]
   Reaction toReaction({User? user}) => Reaction(
-        extraData: extraData,
+        extraData: extraData ?? {},
         type: type,
         createdAt: createdAt,
         userId: userId,