Index: head/sys/conf/Makefile.amd64
===================================================================
--- head/sys/conf/Makefile.amd64
+++ head/sys/conf/Makefile.amd64
@@ -18,7 +18,7 @@
 #
 
 # Which version of config(8) is required.
-%VERSREQ=	600012
+%VERSREQ=	600018
 
 STD8X16FONT?=	iso
 
Index: head/sys/conf/files.amd64
===================================================================
--- head/sys/conf/files.amd64
+++ head/sys/conf/files.amd64
@@ -113,7 +113,8 @@
 amd64/amd64/io.c		optional	io
 amd64/amd64/locore.S		standard	no-obj
 amd64/amd64/xen-locore.S	optional	xenhvm \
-	compile-with "${NORMAL_S} -g0"
+	compile-with "${NORMAL_S} -g0" \
+	no-ctfconvert
 amd64/amd64/machdep.c		standard
 amd64/amd64/mem.c		optional	mem
 amd64/amd64/minidump_machdep.c	standard