diff --git a/Modules/timemodule.c b/Modules/timemodule.c
index 4d13611..69a0c88 100644
--- a/Modules/timemodule.c
+++ b/Modules/timemodule.c
@@ -33,6 +33,10 @@
 #include <signal.h>
 #include <setjmp.h>
 
+#ifdef macintosh
+#define NO_UNISTD
+#endif
+
 #ifndef NO_UNISTD
 #include <unistd.h>
 #endif