diff --git a/Core/Code/IO/mitkItkImageIO.h b/Core/Code/IO/mitkItkImageIO.h
index 6ff64131d8..1dbe196be8 100644
--- a/Core/Code/IO/mitkItkImageIO.h
+++ b/Core/Code/IO/mitkItkImageIO.h
@@ -1,70 +1,70 @@
 /*===================================================================
 
 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 MITKITKFILEIO_H
 #define MITKITKFILEIO_H
 
 #include "mitkAbstractFileIO.h"
 
 #include <itkImageIOBase.h>
 
 namespace mitk {
 
 /**
  * This class wraps ITK image IO objects as mitk::IFileReader and
  * mitk::IFileWriter objects.
  *
  * Instantiating this class with a given itk::ImageIOBase instance
  * will register corresponding MITK reader/writer services for that
  * ITK ImageIO object.
  */
-class ItkImageIO : public AbstractFileIO
+class MITK_CORE_EXPORT ItkImageIO : public AbstractFileIO
 {
 
 public:
 
   ItkImageIO(itk::ImageIOBase::Pointer imageIO);
   ItkImageIO(const CustomMimeType& mimeType, itk::ImageIOBase::Pointer imageIO, int rank);
 
   // -------------- AbstractFileReader -------------
 
   using AbstractFileReader::Read;
   virtual std::vector<itk::SmartPointer<BaseData> > Read();
 
   virtual ConfidenceLevel GetReaderConfidenceLevel() const;
 
   // -------------- AbstractFileWriter -------------
 
   virtual void Write();
   virtual ConfidenceLevel GetWriterConfidenceLevel() const;
 
 protected:
 
   virtual std::vector<std::string> FixUpImageIOExtensions(const std::string& imageIOName);
 
 private:
 
   ItkImageIO(const ItkImageIO& other);
 
   ItkImageIO* IOClone() const;
 
   itk::ImageIOBase::Pointer m_ImageIO;
 };
 
 } // namespace mitk
 
 #endif /* MITKITKFILEIO_H */