diff --git a/zh_CN.GB2312/books/Makefile b/zh_CN.GB2312/books/Makefile
index f741b7199e..8aedaa60fd 100644
--- a/zh_CN.GB2312/books/Makefile
+++ b/zh_CN.GB2312/books/Makefile
@@ -1,9 +1,10 @@
 # Original Revision: 1.12
 # $FreeBSD$
 
 SUBDIR = handbook
+SUBDIR+= porters-handbook
 
 ROOT_SYMLINKS= handbook
 
 DOC_PREFIX?= ${.CURDIR}/../..
 .include "${DOC_PREFIX}/share/mk/doc.project.mk"