diff --git a/physmap.c b/physmap.c
index eca6760..5aa9874 100644
--- a/physmap.c
+++ b/physmap.c
@@ -129,7 +129,7 @@
 void cleanup_cpu_msr(void)
 {
 }
-#elif defined(__DARWIN__)
+#elif defined(__MACH__) && defined(__APPLE__)
 
 #define MEM_DEV "DirectHW"
 
@@ -468,7 +468,7 @@
 
 #else
 
-#ifdef __DARWIN__
+#if defined(__MACH__) && defined(__APPLE__)
 int setup_cpu_msr(int cpu)
 {
 	// Always succeed for now