diff --git a/Mac/Include/macglue.h b/Mac/Include/macglue.h
index d868534..a299016 100644
--- a/Mac/Include/macglue.h
+++ b/Mac/Include/macglue.h
@@ -22,10 +22,18 @@
 
 ******************************************************************/
 
+#ifndef SystemSevenOrLater
+#define SystemSevenOrLater 1
+#endif
+
 #include <Types.h>
 #include <Files.h>
 #include <Events.h>
 
+#ifdef GENERATINGCFM	/* Defined to 0 or 1 in Universal headers */
+#define HAVE_UNIVERSAL_HEADERS
+#endif
+
 char *macstrerror(int);				/* strerror with mac errors */
 
 extern int PyMac_DoYieldEnabled;	/* Don't do eventloop when false */