diff --git a/mach/i86/cg/mach.c b/mach/i86/cg/mach.c
index 0499ca465..e6712d2a5 100644
--- a/mach/i86/cg/mach.c
+++ b/mach/i86/cg/mach.c
@@ -43,6 +43,9 @@ con_mult(sz) word sz; {
 
 #define CODE_GENERATOR
 #define IEEEFLOAT
+#define FL_MSL_AT_LOW_ADDRESS	0
+#define FL_MSW_AT_LOW_ADDRESS	0
+#define FL_MSB_AT_LOW_ADDRESS	0
 #include <con_float>
 
 /*