diff --git a/packages/stream_chat/lib/src/api/channel.dart b/packages/stream_chat/lib/src/api/channel.dart
index 5f33f966..caf5ab3d 100644
--- a/packages/stream_chat/lib/src/api/channel.dart
+++ b/packages/stream_chat/lib/src/api/channel.dart
@@ -1099,7 +1099,7 @@ class Channel {
   }) async {
     final payload = <String, dynamic>{
       'sort': sort,
-      'filter_conditions': filter,
+      'filter_conditions': filter ?? {},
       'type': type,
     };