diff --git a/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml b/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
index b34cd24ab9..f0d0886fb6 100644
--- a/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
+++ b/en_US.ISO8859-1/books/handbook/firewalls/chapter.sgml
@@ -802,7 +802,7 @@ LOG_ERR - packets which have been logged and which can be considered short</scre
      </sect2>
 
      <sect2>
-       <title>Building the Rule Script</title>
+       <title>Building the Rule Script with Symbolic Substitution</title>
 
        <para>Some experienced IPF users create a file containing the
          rules and code them in a manner compatible with running them