diff --git a/Plugins/org.mitk.gui.qt.chartExample/src/internal/org_mitk_gui_qt_chartExample_Activator.h b/Plugins/org.mitk.gui.qt.chartExample/src/internal/org_mitk_gui_qt_chartExample_Activator.h
index 88a0b4803c..cbe6d31332 100644
--- a/Plugins/org.mitk.gui.qt.chartExample/src/internal/org_mitk_gui_qt_chartExample_Activator.h
+++ b/Plugins/org.mitk.gui.qt.chartExample/src/internal/org_mitk_gui_qt_chartExample_Activator.h
@@ -1,38 +1,38 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 
 #ifndef org_mitk_gui_qt_chartExample_Activator_h
 #define org_mitk_gui_qt_chartExample_Activator_h
 
 #include <ctkPluginActivator.h>
 
 namespace mitk
 {
   class org_mitk_gui_qt_chartExample_Activator : public QObject, public ctkPluginActivator
   {
     Q_OBJECT
     Q_PLUGIN_METADATA(IID "org_mitk_gui_qt_chartExample")
     Q_INTERFACES(ctkPluginActivator)
 
   public:
-    void start(ctkPluginContext *context) override;
-    void stop(ctkPluginContext *context) override;
+    void start(ctkPluginContext *context);
+    void stop(ctkPluginContext *context);
 
   }; // org_mitk_gui_qt_chartExample_Activator
 }
 
 #endif // org_mitk_gui_qt_chartExample_Activator_h