diff --git a/CMake/ITKClangFormatSetup.cmake b/CMake/ITKClangFormatSetup.cmake
index abffdd57379..793bb7fbf71 100644
--- a/CMake/ITKClangFormatSetup.cmake
+++ b/CMake/ITKClangFormatSetup.cmake
@@ -41,12 +41,16 @@ if ( ITK_USE_CLANGFORMAT AND NOT EXISTS "${CLANGFORMAT_EXECUTABLE}" )
     message(FATAL_ERROR "UNKOWN SYSTEM: Set CLANGFORMAT_EXECUTABLE manually to the clang-format version 8.0 binary")
   endif()
   file(MAKE_DIRECTORY "${ITK_BINARY_DIR}/temp")
-  file(DOWNLOAD "${CLANGFORMAT_DOWNLOAD_URL}" "${ITK_BINARY_DIR}/temp/clang-format-${CMAKE_SYSTEM_NAME}")
-  file(COPY "${ITK_BINARY_DIR}/temp/clang-format-${CMAKE_SYSTEM_NAME}"
+  if(WIN32)
+    set(exe .exe)
+  endif()
+  set(CLANGFORMAT_EXECUTABLE_NAME "clang-format-${CMAKE_SYSTEM_NAME}${exe}")
+  file(DOWNLOAD "${CLANGFORMAT_DOWNLOAD_URL}" "${ITK_BINARY_DIR}/temp/${CLANGFORMAT_EXECUTABLE_NAME}")
+  file(COPY "${ITK_BINARY_DIR}/temp/${CLANGFORMAT_EXECUTABLE_NAME}"
        DESTINATION "${ITK_BINARY_DIR}"
        FILE_PERMISSIONS OWNER_EXECUTE OWNER_WRITE OWNER_READ)
   unset( CLANGFORMAT_DOWNLOAD_URL )
-  set( CLANGFORMAT_EXECUTABLE "${ITK_BINARY_DIR}/clang-format-${CMAKE_SYSTEM_NAME}" CACHE FILEPATH "The binary for clang-format" FORCE)
+  set( CLANGFORMAT_EXECUTABLE "${ITK_BINARY_DIR}/${CLANGFORMAT_EXECUTABLE_NAME}" CACHE FILEPATH "The binary for clang-format" FORCE)
 endif()
 if(CLANGFORMAT_EXECUTABLE)
   mark_as_advanced(CLANGFORMAT_EXECUTABLE)