diff --git a/mach/vax4/libbsd4_1a/head_em.s b/mach/vax4/libbsd4_1a/head_em.s
index 2608535e4..a71233844 100644
--- a/mach/vax4/libbsd4_1a/head_em.s
+++ b/mach/vax4/libbsd4_1a/head_em.s
@@ -25,8 +25,8 @@ a2:
 	pushl	r0
 	pushl	r2
 	pushl	r1
-	movl	$m1,ap
-	chmk	(ap)+		# catch floating point exception
+#	movl	$m1,ap
+#	chmk	(ap)+		# catch floating point exception
 	calls	$3,_m_a_i_n
 	movl	$m2,ap
 	movl	r0,6(ap)