diff --git a/docs/shorewall_logging.xml b/docs/shorewall_logging.xml
index 6c9c9e74d..7fce572b9 100644
--- a/docs/shorewall_logging.xml
+++ b/docs/shorewall_logging.xml
@@ -233,21 +233,23 @@ gateway:/etc/shorewall#                                               </programl
       <quote><command>logwatch</command></quote> and
       <quote><command>dump</command></quote> commands.</para>
 
-      <para>Beginning in Shorewall-perl 4.1, the NFLOG target is supported.
-      </para>
+      <para>Beginning in Shorewall-perl 4.1, the NFLOG target is
+      supported.</para>
 
-      <para>NFLOG is a successor to ULOG. In addition, both ULOG and NFLOG may
-      be followed by a list of up to three numbers in parentheses.</para>
+      <para>NFLOG is a successor to ULOG. When using <ulink
+      url="Shorewall-perl.html">Shorewall-perl</ulink> 4.1 or later, both ULOG
+      and NFLOG may be followed by a list of up to three numbers in
+      parentheses.</para>
 
       <itemizedlist>
         <listitem>
           <para>The first number specifies the netlink group (1-32). If
-          omitted (e.g., NFLOG(,0,10)) then a value of 1 is assumed. </para>
+          omitted (e.g., NFLOG(,0,10)) then a value of 1 is assumed.</para>
         </listitem>
 
         <listitem>
           <para>The second number specifies the maximum number of bytes to
-          copy. If omitted, 0 (no limit) is assumed. </para>
+          copy. If omitted, 0 (no limit) is assumed.</para>
         </listitem>
 
         <listitem>