diff --git a/Shorewall/Perl/Shorewall/Tc.pm b/Shorewall/Perl/Shorewall/Tc.pm
index 1ca43949f..8f530956c 100644
--- a/Shorewall/Perl/Shorewall/Tc.pm
+++ b/Shorewall/Perl/Shorewall/Tc.pm
@@ -762,6 +762,7 @@ sub validate_tc_class( ) {
 	fatal_error "Invalid INTERFACE:CLASS ($devclass)" if defined $rest;
 
 	if ( $device =~ /^(\d+|0x[\da-fA-F]+)$/ ) {
+	    $device =~ s/^0x//;
 	    ( $number , $classnumber ) = ( hex_value $device, hex_value $number );
 	    ( $device , $devref) = dev_by_number( $number );
 	} else {
@@ -778,6 +779,7 @@ sub validate_tc_class( ) {
 	    }
 
 	    fatal_error "Invalid interface/class number ($devclass)" unless defined $classnumber && $classnumber;
+	    fatal_error "Reserved class number (1)" if $classnumber == 1;
 	    fatal_error "Duplicate interface:class number ($number:$classnumber}" if $tcclasses{$device}{$classnumber};
 	} else {
 	    fatal_error "Missing interface NUMBER";
diff --git a/manpages/shorewall-tcclasses.xml b/manpages/shorewall-tcclasses.xml
index ebc23e173..a6c1bc24c 100644
--- a/manpages/shorewall-tcclasses.xml
+++ b/manpages/shorewall-tcclasses.xml
@@ -134,7 +134,8 @@
           classify option is not given, you may still specify a
           <emphasis>class</emphasis> or you may have Shorewall generate a
           class number from the MARK value. Interface numbers and class
-          numbers are always assumed to be specified in hex.</para>
+          numbers are always assumed to be specified in hex and class number 1
+          is reserved as the root class of the queuing discipline.</para>
 
           <para>You may NOT specify wildcards here, e.g. if you have multiple
           ppp interfaces, you need to put them all in here!</para>
@@ -500,12 +501,13 @@
     url="http://shorewall.net/traffic_shaping.htm">http://shorewall.net/traffic_shaping.htm</ulink></para>
 
     <para>shorewall(8), shorewall-accounting(5), shorewall-actions(5),
-    shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5), shorewall-ipsets(5),
-    shorewall-maclist(5), shorewall-masq(5), shorewall-nat(5),
-    shorewall-netmap(5), shorewall-params(5), shorewall-policy(5),
-    shorewall-providers(5), shorewall-proxyarp(5), shorewall-route_rules(5),
-    shorewall-routestopped(5), shorewall-rules(5), shorewall.conf(5), shorewall-secmarks(5),
-    shorewall-tcdevices(5), shorewall-tcrules(5), shorewall-tos(5),
-    shorewall-tunnels(5), shorewall-zones(5)</para>
+    shorewall-blacklist(5), shorewall-hosts(5), shorewall_interfaces(5),
+    shorewall-ipsets(5), shorewall-maclist(5), shorewall-masq(5),
+    shorewall-nat(5), shorewall-netmap(5), shorewall-params(5),
+    shorewall-policy(5), shorewall-providers(5), shorewall-proxyarp(5),
+    shorewall-route_rules(5), shorewall-routestopped(5), shorewall-rules(5),
+    shorewall.conf(5), shorewall-secmarks(5), shorewall-tcdevices(5),
+    shorewall-tcrules(5), shorewall-tos(5), shorewall-tunnels(5),
+    shorewall-zones(5)</para>
   </refsect1>
 </refentry>
diff --git a/manpages6/shorewall6-tcclasses.xml b/manpages6/shorewall6-tcclasses.xml
index bc6105961..c7ead115c 100644
--- a/manpages6/shorewall6-tcclasses.xml
+++ b/manpages6/shorewall6-tcclasses.xml
@@ -117,7 +117,7 @@
     <variablelist>
       <varlistentry>
         <term><emphasis role="bold">INTERFACE</emphasis> -
-        <emphasis>interface</emphasis>[:<emphasis>class</emphasis>]</term>
+        <emphasis>interface</emphasis>[[:<emphasis>parent</emphasis>]:<emphasis>class</emphasis>]</term>
 
         <listitem>
           <para>Name of <emphasis>interface</emphasis>. Each interface may be
@@ -141,7 +141,8 @@
           file.</para>
 
           <para>Normally, all classes defined here are sub-classes of a root
-          class that is implicitly defined from the entry in <ulink
+          class (class number 1) that is implicitly defined from the entry in
+          <ulink
           url="shorewall6-tcdevices.html">shorewall6-tcdevices</ulink>(5). You
           can establish a class hierarchy by specifying a
           <emphasis>parent</emphasis> class -- the number of a class that you
@@ -454,8 +455,8 @@
     shorewall6-blacklist(5), shorewall6-hosts(5), shorewall6-interfaces(5),
     shorewall6-maclist(5), shorewall6-params(5), shorewall6-policy(5),
     shorewall6-providers(5), shorewall6-route_rules(5),
-    shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5), shorewall6-secmarks(5),
-    shorewall6-tcdevices(5), shorewall6-tcrules(5), shorewall6-tos(5),
-    shorewall6-tunnels(5), shorewall6-zones(5)</para>
+    shorewall6-routestopped(5), shorewall6-rules(5), shorewall6.conf(5),
+    shorewall6-secmarks(5), shorewall6-tcdevices(5), shorewall6-tcrules(5),
+    shorewall6-tos(5), shorewall6-tunnels(5), shorewall6-zones(5)</para>
   </refsect1>
 </refentry>