diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
index a6f4aef12d19..e73536691ccb 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_platform_interceptors.h
@@ -425,7 +425,7 @@
   (SI_LINUX_NOT_ANDROID || SI_MAC || SI_FREEBSD || SI_NETBSD)
 
 #define SANITIZER_INTERCEPT_MMAP (SI_POSIX && !SI_FREEBSD && !SI_NETBSD)
-#define SANITIZER_INTERCEPT_MMAP64 SI_POSIX
+#define SANITIZER_INTERCEPT_MMAP64 (SI_POSIX && !SI_MAC)
 #define SANITIZER_INTERCEPT_MALLOPT_AND_MALLINFO \
   (!SI_FREEBSD && !SI_MAC && !SI_NETBSD && SI_NOT_FUCHSIA)
 #define SANITIZER_INTERCEPT_MEMALIGN (!SI_FREEBSD && !SI_MAC && !SI_NETBSD)