diff --git a/clang/cmake/caches/Fuchsia-stage2.cmake b/clang/cmake/caches/Fuchsia-stage2.cmake
--- a/clang/cmake/caches/Fuchsia-stage2.cmake
+++ b/clang/cmake/caches/Fuchsia-stage2.cmake
@@ -71,9 +71,8 @@
   set(LIBCXX_ENABLE_STATIC_ABI_LIBRARY ON CACHE BOOL "")
   set(LIBCXX_ABI_VERSION 2 CACHE STRING "")
   set(DARWIN_ios_ARCHS armv7;armv7s;arm64 CACHE STRING "")
-  set(DARWIN_iossim_ARCHS i386;x86_64 CACHE STRING "")
+  set(DARWIN_iossim_ARCHS arm64;x86_64 CACHE STRING "")
   set(DARWIN_osx_ARCHS arm64;x86_64 CACHE STRING "")
-  set(SANITIZER_MIN_OSX_VERSION 10.7 CACHE STRING "")
 endif()
 
 if(WIN32)