diff --git a/Shorewall-docs2/configuration_file_basics.xml b/Shorewall-docs2/configuration_file_basics.xml
index 902cf3fa0..d2c0c8460 100644
--- a/Shorewall-docs2/configuration_file_basics.xml
+++ b/Shorewall-docs2/configuration_file_basics.xml
@@ -370,7 +370,7 @@ smtp,www,pop3,imap  #Services running on the firewall</programlisting>
       </listitem>
     </itemizedlist>
 
-    <para>Each DNS name much be fully qualified and include a minimum of two
+    <para>Each DNS name must be fully qualified and include a minimum of two
     periods (although one may be trailing). This restriction is imposed by
     Shorewall to insure backward compatibility with existing configuration
     files.</para>