diff --git a/nl_NL.ISO8859-1/books/handbook/disks/chapter.sgml b/nl_NL.ISO8859-1/books/handbook/disks/chapter.sgml
index 6457db6f6d..6363437470 100644
--- a/nl_NL.ISO8859-1/books/handbook/disks/chapter.sgml
+++ b/nl_NL.ISO8859-1/books/handbook/disks/chapter.sgml
@@ -4494,6 +4494,8 @@ geli_da2_flags="-p -k /root/da2.key"</programlisting>
 	  <surname>Br&uuml;ffer</surname>
 	  <contrib>Geschreven door </contrib>
 	</author>
+      </authorgroup>
+      <authorgroup>
 	<author>
 	  <firstname>Remko</firstname>
 	  <surname>Lodder</surname>