diff --git a/CMakeExternals/CTK.cmake b/CMakeExternals/CTK.cmake
index c8addf3ee3..9a6fe63604 100644
--- a/CMakeExternals/CTK.cmake
+++ b/CMakeExternals/CTK.cmake
@@ -1,38 +1,38 @@
 #-----------------------------------------------------------------------------
 # CTK
 #-----------------------------------------------------------------------------
 
 IF(MITK_USE_CTK)
 
   # Sanity checks
   IF(DEFINED CTK_DIR AND NOT EXISTS ${CTK_DIR})
     MESSAGE(FATAL_ERROR "CTK_DIR variable is defined but corresponds to non-existing directory")
   ENDIF()
 
   SET(proj CTK)
   SET(proj_DEPENDENCIES )
   SET(CTK_DEPENDS ${proj})
 
   IF(NOT DEFINED CTK_DIR)
     ExternalProject_Add(${proj}
       GIT_REPOSITORY git://github.com/commontk/CTK.git
-      GIT_TAG origin/master
+      GIT_TAG 1608ad8ac1e0e548e3cb
       BINARY_DIR ${proj}-build
       INSTALL_COMMAND ""
       CMAKE_GENERATOR ${gen}
       CMAKE_ARGS
         ${ep_common_args}
         -DDESIRED_QT_VERSION:STRING=4
         -DQT_QMAKE_EXECUTABLE:FILEPATH=${QT_QMAKE_EXECUTABLE}
         -DCTK_LIB_DICOM/Widgets:BOOL=ON
       DEPENDS ${proj_DEPENDENCIES}
      )
   SET(CTK_DIR ${CMAKE_CURRENT_BINARY_DIR}/${proj}-build)
   
   ELSE()
 
     mitkMacroEmptyExternalProject(${proj} "${proj_DEPENDENCIES}")
     
   ENDIF()
   
 ENDIF()