diff --git a/Modules/DiffusionIO/ReaderWriter/mitkPeakImageReader.cpp b/Modules/DiffusionIO/ReaderWriter/mitkPeakImageReader.cpp
index b75f923..4319e49 100644
--- a/Modules/DiffusionIO/ReaderWriter/mitkPeakImageReader.cpp
+++ b/Modules/DiffusionIO/ReaderWriter/mitkPeakImageReader.cpp
@@ -1,90 +1,90 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center.
 
 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 "mitkPeakImageReader.h"
 #include <mitkCustomMimeType.h>
 #include <mitkDiffusionIOMimeTypes.h>
 #include <mitkPeakImage.h>
 #include <mitkIOUtil.h>
 #include <mitkPreferenceListReaderOptionsFunctor.h>
 #include <itkImageFileReader.h>
 #include <itksys/SystemTools.hxx>
 #include <itkNiftiImageIO.h>
 #include <itkNrrdImageIO.h>
 #include <mitkITKImageImport.h>
 #include <mitkImageCast.h>
 #include <mitkLocaleSwitch.h>
 
 namespace mitk
 {
 
   PeakImageReader::PeakImageReader(const PeakImageReader& other)
     : mitk::AbstractFileReader(other)
   {
   }
 
   PeakImageReader::PeakImageReader()
     : mitk::AbstractFileReader( CustomMimeType( mitk::DiffusionIOMimeTypes::PEAK_MIMETYPE() ), mitk::DiffusionIOMimeTypes::PEAK_MIMETYPE_DESCRIPTION() )
   {
     m_ServiceReg = this->RegisterService();
   }
 
   PeakImageReader::~PeakImageReader()
   {
   }
 
   std::vector<itk::SmartPointer<BaseData> > PeakImageReader::DoRead()
   {
     mitk::LocaleSwitch localeSwitch("C");
     std::vector<itk::SmartPointer<mitk::BaseData> > result;
     std::string location = GetInputLocation();
     std::string ext = itksys::SystemTools::GetFilenameExtension(location);
     MITK_INFO << "Reading " << location;
 
     typedef itk::ImageFileReader<PeakImage::ItkPeakImageType> FileReaderType;
     FileReaderType::Pointer reader = FileReaderType::New();
     reader->SetFileName(location);
-    if (ext==".peak")
+    if (ext==".peak" || ext==".nrrd")
     {
       itk::NrrdImageIO::Pointer io = itk::NrrdImageIO::New();
       reader->SetImageIO(io);
     }
     else
     {
       itk::NiftiImageIO::Pointer io = itk::NiftiImageIO::New();
       reader->SetImageIO(io);
     }
     reader->Update();
     Image::Pointer resultImage = dynamic_cast<Image*>(PeakImage::New().GetPointer());
     mitk::CastToMitkImage(reader->GetOutput(), resultImage);
     resultImage->SetVolume(reader->GetOutput()->GetBufferPointer());
 
     StringProperty::Pointer nameProp;
     nameProp = StringProperty::New(itksys::SystemTools::GetFilenameWithoutExtension(GetInputLocation()));
     resultImage->SetProperty("name", nameProp);
     dynamic_cast<PeakImage*>(resultImage.GetPointer())->ConstructPolydata();
 
     result.push_back( resultImage.GetPointer() );
 
     return result;
   }
 
 } //namespace MITK
 
 mitk::PeakImageReader* mitk::PeakImageReader::Clone() const
 {
   return new PeakImageReader(*this);
 }