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-rw-r--r--doc/mwg/Linux-PAM_MWG.xml2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/mwg/Linux-PAM_MWG.xml b/doc/mwg/Linux-PAM_MWG.xml
index e8512090..a7d97e4e 100644
--- a/doc/mwg/Linux-PAM_MWG.xml
+++ b/doc/mwg/Linux-PAM_MWG.xml
@@ -1,7 +1,7 @@
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE book PUBLIC "-//OASIS//DTD DocBook XML V4.4//EN"
"http://www.oasis-open.org/docbook/xml/4.4/docbookx.dtd">
-<book>
+<book id="mwg">
<bookinfo>
<title>The Linux-PAM Module Writers' Guide</title>
<authorgroup>