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 8f9b99e7..d265fcb7 100644
--- a/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart
+++ b/packages/stream_chat_persistence/lib/src/mapper/reaction_mapper.dart
@@ -19,6 +19,7 @@ extension ReactionEntityX on ReactionEntity {
 
 /// Useful mapping functions for [Reaction]
 extension ReactionX on Reaction {
+  /// Maps a [Reaction] into [ReactionEntity]
   ReactionEntity toEntity() {
     return ReactionEntity(
       extraData: extraData,