diff --git a/packages/stream_chat/lib/src/client.dart b/packages/stream_chat/lib/src/client.dart
index cf68a4ca..dae21288 100644
--- a/packages/stream_chat/lib/src/client.dart
+++ b/packages/stream_chat/lib/src/client.dart
@@ -468,7 +468,7 @@ class StreamChatClient {
       user: state.user,
       connectParams: {
         'api_key': apiKey,
-        'Authorization': token,
+        'authorization': token,
         'stream-auth-type': _authType,
         'X-Stream-Client': _userAgent,
       },