diff --git a/packages/stream_chat/CHANGELOG.md b/packages/stream_chat/CHANGELOG.md
index cfe86802..ea029152 100644
--- a/packages/stream_chat/CHANGELOG.md
+++ b/packages/stream_chat/CHANGELOG.md
@@ -4,6 +4,8 @@
 
 - [[#1716]](https://github.com/GetStream/stream-chat-flutter/issues/1716) Fixed client not able to
   update message with `type: reply`.
+- [[#1724]](https://github.com/GetStream/stream-chat-flutter/issues/1724) Fixed sendFile error
+  on `AttachmentFile` with `bytes` and no `name`.
 
 ## 6.8.0
 
diff --git a/packages/stream_chat/lib/src/core/models/attachment_file.dart b/packages/stream_chat/lib/src/core/models/attachment_file.dart
index ee6690ca..73a428ea 100644
--- a/packages/stream_chat/lib/src/core/models/attachment_file.dart
+++ b/packages/stream_chat/lib/src/core/models/attachment_file.dart
@@ -74,13 +74,13 @@ class AttachmentFile {
     if (CurrentPlatform.isWeb) {
       multiPartFile = MultipartFile.fromBytes(
         bytes!,
-        filename: name,
+        filename: name ?? 'file',
         contentType: mimeType,
       );
     } else {
       multiPartFile = await MultipartFile.fromFile(
         path!,
-        filename: name,
+        filename: name ?? 'file',
         contentType: mimeType,
       );
     }