diff --git a/Core/Code/DataManagement/mitkGroupTagProperty.h b/Core/Code/DataManagement/mitkGroupTagProperty.h
index bb953913b7..eedccb2d77 100644
--- a/Core/Code/DataManagement/mitkGroupTagProperty.h
+++ b/Core/Code/DataManagement/mitkGroupTagProperty.h
@@ -1,53 +1,54 @@
 /*=========================================================================
 
 Program:   Medical Imaging & Interaction Toolkit
 Language:  C++
 Date:      $Date$
 Version:   $Revision$
 
 Copyright (c) German Cancer Research Center, Division of Medical and
 Biological Informatics. All rights reserved.
 See MITKCopyright.txt or http://www.mitk.org/copyright.html for details.
 
 This software is distributed WITHOUT ANY WARRANTY; without even
 the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 PURPOSE.  See the above copyright notices for more information.
 
 =========================================================================*/
 
 
 #ifndef GROUPTAGPROPERTY_H_HEADER_INCLUDED_C1F4DF54
 #define GROUPTAGPROPERTY_H_HEADER_INCLUDED_C1F4DF54
 
 #include <mitkBaseProperty.h>
 
 namespace mitk {
 
 /*! @brief Property class that has no value. 
     
   @ingroup DataManagement
 
     The GroupTag property is used to tag a datatree node to show, that it is member of a 
     group of datatree nodes. This can be used to build groups of datatreenodes without the
     need to contain them in a specific hiearchic order in the datatree
 */
 class MITK_CORE_EXPORT GroupTagProperty : public BaseProperty
 {
   public:
     mitkClassMacro(GroupTagProperty, BaseProperty);
     itkNewMacro(GroupTagProperty);
     
     virtual ~GroupTagProperty();
 
     virtual bool operator==(const BaseProperty& property) const;
     virtual bool Assignable(const BaseProperty& other) const;
+    virtual BaseProperty& operator=(const BaseProperty& other) { return Superclass::operator=(other); }
     
   protected:
     GroupTagProperty();
 };
 
 } // namespace mitk
 
 
 
 #endif /* GROUPTAGPROPERTY_H_HEADER_INCLUDED_C1F4DF54 */