diff --git a/mach/z80/as/mach0.c b/mach/z80/as/mach0.c
index e77183479..0b334c5eb 100644
--- a/mach/z80/as/mach0.c
+++ b/mach/z80/as/mach0.c
@@ -1,4 +1,3 @@
-#define DUK
 #define RCSID0 "$Header$"
 
 /*
@@ -7,4 +6,3 @@
 #define	THREE_PASS		/* distinguish short and long branches */
 #define	LISTING			/* enable listing facilities */
 #define RELOCATION
-#define NOLD