diff --git a/manpages/shorewall-tcdevices.xml b/manpages/shorewall-tcdevices.xml
index b60e74d34..dea123a31 100644
--- a/manpages/shorewall-tcdevices.xml
+++ b/manpages/shorewall-tcdevices.xml
@@ -150,6 +150,12 @@
         </listitem>
       </varlistentry>
     </variablelist>
+
+    <warning>
+      <para>This file is currently limited to ten (10) entries. Additional
+      entries will cause run-time errors in the generated firewall
+      script.</para>
+    </warning>
   </refsect1>
 
   <refsect1>