diff --git a/cmake/UseCXX14.cmake b/cmake/UseCXX14.cmake
index a45f3be72..95c3dd2d7 100644
--- a/cmake/UseCXX14.cmake
+++ b/cmake/UseCXX14.cmake
@@ -4,7 +4,7 @@ endif()
 set(__USECXX14_CMAKE__ TRUE)
 
 if(APPLE)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -std=c++14")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -stdlib=libc++ -std=c++1y")
 elseif(UNIX)
     # assume GCC, add C++0x/C++11 stuff
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")