diff --git a/Core/Code/Common/mitkException.cpp b/Core/Code/Common/mitkException.cpp
index f374adcd9c..f5495e5d5d 100644
--- a/Core/Code/Common/mitkException.cpp
+++ b/Core/Code/Common/mitkException.cpp
@@ -1,43 +1,43 @@
 /*===================================================================
 
 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 "mitkException.h"
 
 void mitk::Exception::AddRethrowData(const char *file, unsigned int lineNumber, const char *message)
     {
     mitk::Exception::ReThrowData data = {file, lineNumber, message};
     this->m_RethrowData.push_back(data);
     }
     
 int mitk::Exception::GetNumberOfRethrows()
     {
     return (int)m_RethrowData.size();
     }
     
 void mitk::Exception::GetRethrowData(int rethrowNumber, std::string &file, int &line, std::string &message)
     {
-      if ((rethrowNumber >= m_RethrowData.size()) || (rethrowNumber<0))
+      if ((rethrowNumber >= (int)m_RethrowData.size()) || (rethrowNumber<0))
         {
         file = "";
         line = 0;
         message = "";
         return;
         }    
         
     file = m_RethrowData.at(rethrowNumber).RethrowClassname;
     line = m_RethrowData.at(rethrowNumber).RethrowLine;
     message = m_RethrowData.at(rethrowNumber).RethrowMessage;
     }