diff --git a/CMakeExternals/PatchVTK-5.10.cmake b/CMakeExternals/PatchVTK-5.10.cmake
deleted file mode 100644
index 9bea769311..0000000000
--- a/CMakeExternals/PatchVTK-5.10.cmake
+++ /dev/null
@@ -1,29 +0,0 @@
-# Called by VTK.cmake (ExternalProject_Add) as a patch for VTK 5.10
-if(APPLE)
-  # patch for VTK 5.10 to work on Mac OS X
-
-  # Updates vtkQtBarChart.cxx which fails to build on Mac OS X. The Mac OS X compiler can not resolve a isnan call of vtk.
-  # Calling std::isnan solves this problem. But std::isnan is part of c++ 11 which most likely will not be recognized
-  # by windows and linux compilers so this patch is needed only for Mac OS X systems
-  # read whole file vtkQtBarChart.cxx
-  file(STRINGS GUISupport/Qt/Chart/vtkQtBarChart.cxx sourceCode NEWLINE_CONSUME)
-
-  # substitute dependency to gdcmMSFF by dependencies for more libraries
-    string(REGEX REPLACE "[(]isnan" "(std::isnan" sourceCode ${sourceCode})
-
-  # set variable CONTENTS, which is substituted in TEMPLATE_FILE
-  set(CONTENTS ${sourceCode})
-  configure_file(${TEMPLATE_FILE} GUISupport/Qt/Chart/vtkQtBarChart.cxx @ONLY)
-
-endif()
-
-if (WIN32)
-  # patch for VTK 5.10, bug http://paraview.org/Bug/view.php?id=14122
-  # fix is included in VTK 6, so we can remove this part as soon as VTK 6 is our default
-
-  # complete patched file is in ${WIN32_OPENGL_RW_FILE}
-
-  file(STRINGS ${WIN32_OPENGL_RW_FILE} sourceCode NEWLINE_CONSUME)
-  set(CONTENTS ${sourceCode})
-  configure_file(${TEMPLATE_FILE} Rendering/vtkWin32OpenGLRenderWindow.cxx @ONLY)
-endif()
diff --git a/CMakeExternals/VTK.cmake b/CMakeExternals/VTK.cmake
index 92cfe3ef35..4b893bc6e4 100644
--- a/CMakeExternals/VTK.cmake
+++ b/CMakeExternals/VTK.cmake
@@ -1,100 +1,98 @@
 #-----------------------------------------------------------------------------
 # VTK
 #-----------------------------------------------------------------------------
 
 if(WIN32)
   option(VTK_USE_SYSTEM_FREETYPE OFF)
 else(WIN32)
   option(VTK_USE_SYSTEM_FREETYPE ON)
 endif(WIN32)
 
 # Sanity checks
 if(DEFINED VTK_DIR AND NOT EXISTS ${VTK_DIR})
   message(FATAL_ERROR "VTK_DIR variable is defined but corresponds to non-existing directory")
 endif()
 
 set(proj VTK)
 set(proj_DEPENDENCIES )
 set(VTK_DEPENDS ${proj})
 
 if(NOT DEFINED VTK_DIR)
 
   set(additional_cmake_args )
   if(MINGW)
     set(additional_cmake_args
         -DCMAKE_USE_WIN32_THREADS:BOOL=ON
         -DCMAKE_USE_PTHREADS:BOOL=OFF
         -DVTK_USE_VIDEO4WINDOWS:BOOL=OFF # no header files provided by MinGW
         )
   endif()
 
   if(MITK_USE_Python)
     list(APPEND additional_cmake_args
          -DVTK_WRAP_PYTHON:BOOL=ON
          -DVTK_USE_TK:BOOL=OFF
          -DVTK_WINDOWS_PYTHON_DEBUGGABLE:BOOL=OFF
          -DPYTHON_EXECUTABLE:FILEPATH=${PYTHON_EXECUTABLE}
          -DPYTHON_INCLUDE_DIR:PATH=${PYTHON_INCLUDE_DIR}
          -DPYTHON_INCLUDE_DIR2:PATH=${PYTHON_INCLUDE_DIR2}
          -DPYTHON_LIBRARY:FILEPATH=${PYTHON_LIBRARY}
          #-DPYTHON_LIBRARIES=${PYTHON_LIBRARY}
          #-DPYTHON_DEBUG_LIBRARIES=${PYTHON_DEBUG_LIBRARIES}
         )
   else()
     list(APPEND additional_cmake_args
          -DVTK_WRAP_PYTHON:BOOL=OFF
          -DVTK_WINDOWS_PYTHON_DEBUGGABLE:BOOL=OFF
         )
   endif()
 
   if(MITK_USE_QT)
     list(APPEND additional_cmake_args
         -DDESIRED_QT_VERSION:STRING=4
         -DVTK_USE_GUISUPPORT:BOOL=ON
         -DVTK_USE_QVTK_QTOPENGL:BOOL=OFF
         -DVTK_USE_QT:BOOL=ON
         -DQT_QMAKE_EXECUTABLE:FILEPATH=${QT_QMAKE_EXECUTABLE}
      )
   endif()
 
   set(VTK_URL ${MITK_THIRDPARTY_DOWNLOAD_PREFIX_URL}/vtk-6.0.0.tar.gz)
   set(VTK_URL_MD5 fa07fb55a905186f7d98807585efb20e)
 
-  set(VTK_PATCH_COMMAND ${CMAKE_COMMAND} -DTEMPLATE_FILE:FILEPATH=${MITK_SOURCE_DIR}/CMakeExternals/EmptyFileForPatching.dummy -DWIN32_OPENGL_RW_FILE:FILEPATH=${MITK_SOURCE_DIR}/CMakeExternals/vtkWin32OpenGLRenderWindow.cxx.vtk-5.10.patched -P ${MITK_SOURCE_DIR}/CMakeExternals/PatchVTK-5.10.cmake)
 
     ExternalProject_Add(${proj}
     SOURCE_DIR ${CMAKE_BINARY_DIR}/${proj}-src
     BINARY_DIR ${proj}-build
     PREFIX ${proj}-cmake
     URL ${VTK_URL}
     URL_MD5 ${VTK_URL_MD5}
     INSTALL_COMMAND ""
-    PATCH_COMMAND ${VTK_PATCH_COMMAND}
     CMAKE_GENERATOR ${gen}
     CMAKE_ARGS
         ${ep_common_args}
         -DVTK_GROUP_QT:BOOL=ON
         -DVTK_Group_Qt:BOOL=ON
         -DVTK_WRAP_TCL:BOOL=OFF
         -DVTK_WRAP_PYTHON:BOOL=OFF
         -DVTK_WRAP_JAVA:BOOL=OFF
         -DBUILD_SHARED_LIBS:BOOL=ON
         -DVTK_USE_SYSTEM_FREETYPE:BOOL=${VTK_USE_SYSTEM_FREETYPE}
         -DVTK_LEGACY_REMOVE:BOOL=ON
         -DModule_vtkTestingRendering:BOOL=ON
         -DModule_vtkGUISupportQt:BOOL=ON
         -DModule_vtkGUISupportQtWebkit:BOOL=ON
         -DModule_vtkGUISupportQtSQL:BOOL=ON
         -DModule_vtkRenderingQt:BOOL=ON
         -DVTK_MAKE_INSTANTIATORS:BOOL=ON
         ${additional_cmake_args}
      DEPENDS ${proj_DEPENDENCIES}
     )
 
   set(VTK_DIR ${CMAKE_CURRENT_BINARY_DIR}/${proj}-build)
 
 else()
 
   mitkMacroEmptyExternalProject(${proj} "${proj_DEPENDENCIES}")
 
 endif()