diff --git a/docs/Shorewall_Squid_Usage.xml b/docs/Shorewall_Squid_Usage.xml
index eec9a7b31..0e2a7b938 100644
--- a/docs/Shorewall_Squid_Usage.xml
+++ b/docs/Shorewall_Squid_Usage.xml
@@ -69,19 +69,19 @@
 
           <itemizedlist>
             <listitem>
-              <para>httpd_accel_host virtual</para>
+              <para><programlisting>httpd_accel_host virtual</programlisting></para>
             </listitem>
 
             <listitem>
-              <para>httpd_accel_port 80</para>
+              <para><programlisting>httpd_accel_port 80</programlisting></para>
             </listitem>
 
             <listitem>
-              <para>httpd_accel_with_proxy on</para>
+              <para><programlisting>httpd_accel_with_proxy on</programlisting></para>
             </listitem>
 
             <listitem>
-              <para>httpd_accel_uses_host_header on</para>
+              <para><programlisting>httpd_accel_uses_host_header on</programlisting></para>
             </listitem>
           </itemizedlist>
         </listitem>