diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform.h
@@ -65,7 +65,8 @@
 #if defined(__APPLE__)
 #  define SANITIZER_APPLE 1
 // SANITIZER_MAC will be deprecated/removed in the future
-#  define SANITIZER_MAC SANITIZER_APPLE
+#  define SANITIZER_MAC \
+     error "SANITIZER_MAC will be removed, please use SANITIZER_APPLE"
 #  include <TargetConditionals.h>
 #  if TARGET_OS_OSX
 #    define SANITIZER_OSX 1
@@ -99,7 +100,8 @@
 #  endif
 #else
 #  define SANITIZER_APPLE 0
-#  define SANITIZER_MAC SANITIZER_APPLE
+#  define SANITIZER_MAC \
+     error "SANITIZER_MAC will be removed, please use SANITIZER_APPLE"
 #  define SANITIZER_OSX 0
 #  define SANITIZER_IOS 0
 #  define SANITIZER_WATCHOS 0