diff --git a/en_US.ISO8859-1/books/handbook/pgpkeys/chapter.sgml b/en_US.ISO8859-1/books/handbook/pgpkeys/chapter.sgml
index b69f56c263..cf923c8489 100644
--- a/en_US.ISO8859-1/books/handbook/pgpkeys/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/pgpkeys/chapter.sgml
@@ -146,6 +146,11 @@
       &pgpkey.cjc;
     </sect2>
 
+    <sect2 id="pgpkey-marcus">
+      <title>&a.marcus;</title>
+      &pgpkey.marcus;
+    </sect2>
+
     <sect2 id="pgpkey-nik">
       <title>&a.nik;</title>
       &pgpkey.nik;