diff --git a/mach/i80/as/mach0.c b/mach/i80/as/mach0.c
index 2249df643..e5a7e88ec 100644
--- a/mach/i80/as/mach0.c
+++ b/mach/i80/as/mach0.c
@@ -9,3 +9,5 @@
  */
 #define	LISTING
 #define RELOCATION
+#define THREE_PASS
+