diff --git a/share/sgml/freebsd.ent b/share/sgml/freebsd.ent
index 3505a8871f..a737d8d75b 100644
--- a/share/sgml/freebsd.ent
+++ b/share/sgml/freebsd.ent
@@ -24,6 +24,10 @@
 <!ENTITY tex '<application>TeX</application>'>
 <!ENTITY latex '<application>LaTeX</application>'>
 
+<!-- Use an entity for the X.Org X server -->
+
+<!ENTITY xorg "Xorg">
+
 <!-- The currently released version of FreeBSD.  This value is used to
      create some links on web sites and such, so do NOT change it until
      it's really release time -->