diff --git a/doc/extending-gramps/C/extending-gramps-C.omf b/doc/extending-gramps/C/extending-gramps-C.omf
index 4f518e90b..b8115634e 100644
--- a/doc/extending-gramps/C/extending-gramps-C.omf
+++ b/doc/extending-gramps/C/extending-gramps-C.omf
@@ -1,14 +1,17 @@
 <?xml version="1.0" standalone="no"?>
 <omf>
   <resource>
+    <creator>
+     Donald N. Allingham (dallingham@users.sourceforge.net)
+    </creator>
     <title>
       Writing GRAMPS Extensions
     </title>
-    <subject>
-      <category>GNOME|Applications</category>
-    </subject>
+    <date>2002-03-29</date>
+    <subject category="GNOME|Applications"/>
     <format mime="text/sgml"/>
     <identifier url="extending-gramps.sgml"/>
     <language code="C"/>
+    <relation seriesid="6d396638-bc35-11d6-8a4f-87450c73d5e0"/>
   </resource>
 </omf>