diff --git a/configure.in b/configure.in
index 1e01d3826b..7d384d6f8d 100644
--- a/configure.in
+++ b/configure.in
@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(1)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.516 $)
+AC_REVISION($Revision: 1.517 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.59)
@@ -3044,7 +3044,7 @@ if test "$atf" = yes; then
 	ATFBUILD=atf-src
 	AC_SUBST(ATFBUILD)
 	AC_CONFIG_COMMANDS([atf-config],
-		[cd unit/atf-src; sh ./configure --prefix $atfdir; cd ../..],
+		[cd unit/atf-src; ${SHELL} ./configure MISSING=: --prefix $atfdir; cd ../..],
 		[atfdir=`pwd`/unit/atf])
 	AC_MSG_RESULT(building ATF from bind9/unit/atf-src)
 fi