diff --git a/src/axis/qabstractaxis.h b/src/axis/qabstractaxis.h
index b5f5fc0..a74bb68 100644
--- a/src/axis/qabstractaxis.h
+++ b/src/axis/qabstractaxis.h
@@ -137,8 +137,6 @@ protected:
     friend class ChartDataSet;
     friend class ChartAxis;
     friend class ChartPresenter;
-    friend class ChartCategoriesAxisX;
-    friend class ChartCategoriesAxisY;
 };
 
 QTCOMMERCIALCHART_END_NAMESPACE