diff --git a/zh_CN.GB2312/share/sgml/trademarks.ent b/zh_CN.GB2312/share/sgml/trademarks.ent
index 7b0c2ac0a9..ed486e5445 100644
--- a/zh_CN.GB2312/share/sgml/trademarks.ent
+++ b/zh_CN.GB2312/share/sgml/trademarks.ent
@@ -8,7 +8,7 @@
 
      Please keep this file sorted.
 
-     Original revision: 1.43
+     Original revision: 1.44
      $FreeBSD$
 -->
 
@@ -80,7 +80,9 @@
 
 <!ENTITY tm-attrib.cisco "<para>Cisco, Catalyst, 和 IOS
   是 Cisco Systems, Inc. 和/或其附属机构在美国和一些其他国家的注册商标。</para>">
+<!ENTITY cisco "<trademark class='registered'>Cisco</trademark>">
 <!ENTITY catalyst "<trademark class='registered'>Catalyst</trademark>">
+<!ENTITY etherchannel "<trademark class='registered'>EtherChannel</trademark>">
 <!ENTITY ios "<trademark class='registered'>IOS</trademark>">
 
 <!ENTITY tm-attrib.corel "<para>Corel 和 WordPerfect 是 Corel Corporation 和/或其子公司
@@ -137,6 +139,7 @@ Coverity Extend
 
 <!ENTITY tm-attrib.ieee "<para>IEEE, POSIX, 和 802 是 Institute of Electrical and Electronics Engineers,
   Inc. 在美国的注册商标。</para>">
+<!ENTITY ieee "<trademark class='registered'>IEEE</trademark>">
 <!ENTITY posix "<trademark class='registered'>POSIX</trademark>">
 
 <!-- http://www.intel.com/intel/legal/tmnouns2.htm -->