diff --git a/mach/s2650/as/mach0.c b/mach/s2650/as/mach0.c
index 6a2eda23a..bb22a9bc8 100644
--- a/mach/s2650/as/mach0.c
+++ b/mach/s2650/as/mach0.c
@@ -1,4 +1,3 @@
-#define DUK
 #define RCSID0 "$Header$"
 
 /*
@@ -8,4 +7,3 @@
 #define BYTES_REVERSED
 #define THREE_PASS
 #define RELOCATION
-#define NOLD