diff --git a/Makefile.inc1 b/Makefile.inc1
index 6a8b7b0c0317..803ce91b7699 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -177,7 +177,8 @@ CROSSENV=	MAKEOBJDIRPREFIX=${OBJTREE} \
 		PERL5LIB=${WORLDTMP}/usr/libdata/perl/5.6.0 \
 		GROFF_BIN_PATH=${WORLDTMP}/usr/bin \
 		GROFF_FONT_PATH=${WORLDTMP}/usr/share/groff_font \
-		GROFF_TMAC_PATH=${WORLDTMP}/usr/share/tmac
+		GROFF_TMAC_PATH=${WORLDTMP}/usr/share/tmac \
+		NO_WERROR=yes
 
 # bootstrap-tool stage
 BMAKEENV=	MAKEOBJDIRPREFIX=${WORLDTMP} \
@@ -605,7 +606,7 @@ _libkrb5= kerberos5/lib/libasn1 kerberos5/lib/libhdb kerberos5/lib/libsl
 build-tools:
 .for _tool in bin/csh bin/sh ${_games} gnu/usr.bin/cc/cc_tools ${_fortran} \
     ${_perl} ${_libroken4} ${_libkrb5} lib/libncurses ${_share} \
-	usr.bin/file usr.sbin/sysinstall
+    usr.bin/file usr.sbin/sysinstall
 	cd ${.CURDIR}/${_tool}; ${MAKE} build-tools
 .endfor