diff --git a/thermion_dart/lib/src/input/src/implementations/free_flight_camera_delegate_v2.dart b/thermion_dart/lib/src/input/src/implementations/free_flight_camera_delegate_v2.dart
index 00353388..8324e9d3 100644
--- a/thermion_dart/lib/src/input/src/implementations/free_flight_camera_delegate_v2.dart
+++ b/thermion_dart/lib/src/input/src/implementations/free_flight_camera_delegate_v2.dart
@@ -3,7 +3,7 @@ import 'package:vector_math/vector_math_64.dart';
 import '../../../viewer/viewer.dart';
 import '../../input.dart';
 
-class FreeFlightInputHandlerDelegateV2 implements InputHandlerDelegate {
+class FreeFlightInputHandlerDelegateV2 extends InputHandlerDelegate {
   final View view;
 
   final InputSensitivityOptions sensitivity;