diff --git a/el_GR.ISO8859-7/articles/Makefile b/el_GR.ISO8859-7/articles/Makefile
index f33cef76b6..35a3d3e7cc 100644
--- a/el_GR.ISO8859-7/articles/Makefile
+++ b/el_GR.ISO8859-7/articles/Makefile
@@ -1,17 +1,18 @@
 # $FreeBSD$
 
 SUBDIR =
 SUBDIR+= cvs-freebsd
 SUBDIR+= dialup-firewall
 SUBDIR+= explaining-bsd
 SUBDIR+= formatting-media
 SUBDIR+= freebsd-questions
 SUBDIR+= java-tomcat
 SUBDIR+= laptop
+SUBDIR+= multi-os
 SUBDIR+= new-users
 SUBDIR+= problem-reports
 SUBDIR+= releng
 SUBDIR+= releng-packages
 
 DOC_PREFIX?= ${.CURDIR}/../..
 .include "${DOC_PREFIX}/share/mk/doc.project.mk"