diff --git a/packages/stream_chat_persistence/lib/src/dao/channel_query_dao.dart b/packages/stream_chat_persistence/lib/src/dao/channel_query_dao.dart
index c65a4d82..3f27cfd5 100644
--- a/packages/stream_chat_persistence/lib/src/dao/channel_query_dao.dart
+++ b/packages/stream_chat_persistence/lib/src/dao/channel_query_dao.dart
@@ -94,7 +94,7 @@ class ChannelQueryDao extends DatabaseAccessor<MoorChatDatabase>
         ?.where((s) => possibleSortingFields.contains(s.field))
         ?.toList(growable: false);
 
-    var chainedComparator = (a, b) {
+    var chainedComparator = (ChannelModel a, ChannelModel b) {
       final dateA = a.lastMessageAt ?? a.createdAt;
       final dateB = b.lastMessageAt ?? b.createdAt;
       return dateB.compareTo(dateA);