diff --git a/Plugins/org.mitk.gui.qt.tubegraph/src/internal/mitkPluginActivator.cpp b/Plugins/org.mitk.gui.qt.tubegraph/src/internal/mitkPluginActivator.cpp
index f162323864..c422967c9a 100644
--- a/Plugins/org.mitk.gui.qt.tubegraph/src/internal/mitkPluginActivator.cpp
+++ b/Plugins/org.mitk.gui.qt.tubegraph/src/internal/mitkPluginActivator.cpp
@@ -1,41 +1,41 @@
 /*===================================================================
 
 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.
 
 ===================================================================*/
 
 #include "mitkPluginActivator.h"
 #include "src/internal/QmitkTubeGraphView.h"
 
 namespace mitk
 {
 
   ctkPluginContext* PluginActivator::m_context = nullptr;
 
   void PluginActivator::start(ctkPluginContext* context)
   {
     BERRY_REGISTER_EXTENSION_CLASS(QmitkTubeGraphView, context)
     this->m_context = context;
   }
 
-  void PluginActivator::stop(ctkPluginContext* context)
+  void PluginActivator::stop(ctkPluginContext*)
   {
     this->m_context = nullptr;
   }
 
   ctkPluginContext* PluginActivator::getContext()
   {
     return m_context;
   }
 
 } //namespace