diff --git a/en_US.ISO8859-1/books/porters-handbook/slow-porting/chapter.xml b/en_US.ISO8859-1/books/porters-handbook/slow-porting/chapter.xml
index 0a95b46099..7ff9dcd493 100644
--- a/en_US.ISO8859-1/books/porters-handbook/slow-porting/chapter.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/slow-porting/chapter.xml
@@ -441,6 +441,14 @@ DOS2UNIX_REGEX=	.*\.([ch]|cpp)</programlisting>
 
       <programlisting>USES=	dos2unix
 DOS2UNIX_GLOB=	*.c *.cpp *.h</programlisting>
+
+      <para>If there are more than one distribution file and some
+	other than the default need to have files converted, the base
+	directory for the conversions can be changed so that they are
+	also converted.</para>
+
+      <programlisting>USES=	dos2unix
+DOS2UNIX_WRKSRC=	${WRKDIR}</programlisting>
     </sect2>
   </sect1>
 
diff --git a/en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml b/en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
index f8c8c8d281..0680dc250a 100644
--- a/en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
+++ b/en_US.ISO8859-1/books/porters-handbook/uses/chapter.xml
@@ -355,7 +355,7 @@
     <para>Possible arguments: (none)</para>
 
     <para>The port has files with line endings in
-      <acronym>DOS</acronym> format which need to be converted.  Three
+      <acronym>DOS</acronym> format which need to be converted.  Four
       variables can be set to control which files will be converted.
       The default is to convert <emphasis>all</emphasis> files,
       including binaries.  See <xref
@@ -377,6 +377,12 @@
 	<para><varname>DOS2UNIX_GLOB</varname>: match file names based
 	  on a glob pattern.</para>
       </listitem>
+
+      <listitem>
+	<para><varname>DOS2UNIX_WRKSRC</varname>: the directory from
+	  which to start doing the conversions, defaults to
+	  <literal>${WRKSRC}</literal>.</para>
+      </listitem>
     </itemizedlist>
   </sect1>