diff --git a/SuperBuild/CMake/External_itk.cmake b/SuperBuild/CMake/External_itk.cmake
index 2975d7526859aee4815bcde891672a240d4fd9d7..4bd69addb8e7e2b6358e776e90822f4ce7814c10 100644
--- a/SuperBuild/CMake/External_itk.cmake
+++ b/SuperBuild/CMake/External_itk.cmake
@@ -101,14 +101,7 @@ else()
   endforeach()
 
   # declare dependencies
-  ADDTO_DEPENDENCIES_IF_NOT_SYSTEM(ITK TIFF EXPAT PNG ZLIB FFTW)
-
-  ADD_SUPERBUILD_CMAKE_VAR(ITK TIFF_INCLUDE_DIR)
-  ADD_SUPERBUILD_CMAKE_VAR(ITK TIFF_LIBRARY)
-  ADD_SUPERBUILD_CMAKE_VAR(ITK EXPAT_INCLUDE_DIR)
-  ADD_SUPERBUILD_CMAKE_VAR(ITK EXPAT_LIBRARY)
-  ADD_SUPERBUILD_CMAKE_VAR(ITK PNG_INCLUDE_DIR)
-  ADD_SUPERBUILD_CMAKE_VAR(ITK PNG_LIBRARY)
+  ADDTO_DEPENDENCIES_IF_NOT_SYSTEM(ITK ZLIB FFTW)
   ADD_SUPERBUILD_CMAKE_VAR(ITK ZLIB_INCLUDE_DIR)
   ADD_SUPERBUILD_CMAKE_VAR(ITK ZLIB_LIBRARY)