diff --git a/mem/mem_darwin.go b/mem/mem_darwin.go
index 5f744b8..5665595 100644
--- a/mem/mem_darwin.go
+++ b/mem/mem_darwin.go
@@ -3,7 +3,6 @@
 package mem
 
 /*
-#include <unistd.h>
 #include <mach/mach_host.h>
 */
 import "C"