diff --git a/SuperBuild/CMake/External_boost.cmake b/SuperBuild/CMake/External_boost.cmake
index 29bc658a8b9cac8ec1704e697569dd00bc11f2e7..32002aa828ad46c0a6581a6b225344acf69c2195 100644
--- a/SuperBuild/CMake/External_boost.cmake
+++ b/SuperBuild/CMake/External_boost.cmake
@@ -52,7 +52,7 @@ set(BOOST_BOOTSTRAP_OPTIONS "")
 if(UNIX)
   set(BOOST_BOOTSTRAP_FILE "./bootstrap.sh")
   set(BOOST_B2_EXE "./b2")
-  if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
+  if(NOT APPLE AND "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
     set(BOOST_SB_CONFIG
         ${BOOST_SB_CONFIG}
         toolset=clang)