diff --git a/packages/flutter/lib/src/widgets/widget_inspector.dart b/packages/flutter/lib/src/widgets/widget_inspector.dart
index c1d7c26551..6afe24e3fa 100644
--- a/packages/flutter/lib/src/widgets/widget_inspector.dart
+++ b/packages/flutter/lib/src/widgets/widget_inspector.dart
@@ -1424,7 +1424,7 @@ mixin WidgetInspectorService {
     ) ?? const <_DiagnosticsPathNode>[];
   }
 
-  List<_DiagnosticsPathNode> _getRenderObjectParentChain(RenderObject renderObject, String groupName, { int maxparents }) {
+  List<_DiagnosticsPathNode> _getRenderObjectParentChain(RenderObject renderObject, String groupName) {
     final List<RenderObject> chain = <RenderObject>[];
     while (renderObject != null) {
       chain.add(renderObject);