diff --git a/external/lib/Makefile b/external/lib/Makefile
index d902a84f832a..97bf857fce04 100644
--- a/external/lib/Makefile
+++ b/external/lib/Makefile
@@ -1,4 +1,4 @@
-#	$NetBSD: Makefile,v 1.4 2009/01/12 16:03:16 christos Exp $
+#	$NetBSD: Makefile,v 1.5 2009/01/19 07:16:11 jmmv Exp $
 
 #
 # This Makefile exists to provide a single point to build
@@ -8,6 +8,10 @@
 
 .include <bsd.own.mk>
 
+.if (${MKATF} != "no")
+SUBDIR+= ../bsd/atf/lib
+.endif
+
 .if (${MKLDAP} != "no")
 SUBDIR+= ../bsd/openldap/lib
 .endif