diff --git a/share/sgml/trademarks.ent b/share/sgml/trademarks.ent
index 7799bac618..34ef4387e4 100644
--- a/share/sgml/trademarks.ent
+++ b/share/sgml/trademarks.ent
@@ -93,6 +93,7 @@
   or registered trademarks of Corel Corporation and/or its
   subsidiaries in Canada, the United States and/or other
   countries.</para>">
+<!ENTITY wordperfect "<trademark class='registered'>WordPerfect</trademark>">
 
 <!-- http://www.creative.com/legal.asp -->
 <!ENTITY tm-attrib.creative "<para>Sound Blaster is a trademark of
@@ -279,6 +280,7 @@
 <!ENTITY tm-attrib.realnetworks "<para>RealNetworks, RealPlayer, and
   RealAudio are the registered trademarks of RealNetworks,
   Inc.</para>">
+<!ENTITY realplayer "<trademark class='registered'>RealPlayer</trademark>">
 
 <!-- Note: RedHat doesn't use (r)/(tm) for their own trademarks -->
 <!-- http://www.redhat.com/legal/legal_statement.html -->