diff --git a/webrtc_controller_flutter/lib/controller/remote_controller.dart b/webrtc_controller_flutter/lib/controller/remote_controller.dart
index 90955a4..16aa271 100644
--- a/webrtc_controller_flutter/lib/controller/remote_controller.dart
+++ b/webrtc_controller_flutter/lib/controller/remote_controller.dart
@@ -14,8 +14,8 @@ class RemoteController {
   final String serverUrl;
   final String deviceId;
   final String targetDeviceId;
-  final String? authType;
-  final String? authValue;
+  String? authType;
+  String? authValue;
 
   late final SignalingClient _signaling;
   WebRtcController? _webRtc;