diff --git a/docs/configuration_file_basics.xml b/docs/configuration_file_basics.xml
index ddf63e5c4..e83453b7c 100644
--- a/docs/configuration_file_basics.xml
+++ b/docs/configuration_file_basics.xml
@@ -186,8 +186,8 @@
         <listitem>
           <para><filename>/etc/shorewall/tcdevices</filename>,
           <filename>/etc/shorewall/tcclasses</filename>,
-          <filename>/etc/shorewall/tcfilters</filename> - Define traffic
-          shaping.</para>
+          <filename>/etc/shorewall/tcfilters</filename> - Define complex
+          traffic shaping.</para>
         </listitem>
 
         <listitem>
@@ -195,6 +195,12 @@
           traffic for traffic shaping or multiple providers.</para>
         </listitem>
 
+        <listitem>
+          <para><filename>/etc/shorewall/tcinterfaces</filename> and
+          <filename>/etc/shorewall-tcpri</filename> - Define simple traffic
+          shaping.</para>
+        </listitem>
+
         <listitem>
           <para><filename>/etc/shorewall/vardir</filename> - Determines the
           directory where Shorewall maintains its state.</para>