diff --git a/share/sgml/man-refs.ent b/share/sgml/man-refs.ent
index 9d46413a92..e693cf3178 100644
--- a/share/sgml/man-refs.ent
+++ b/share/sgml/man-refs.ent
@@ -3388,6 +3388,7 @@
 <!ENTITY man.geom.4 "<citerefentry/<refentrytitle/geom/<manvolnum/4//">
 <!ENTITY man.geom.uzip.4 "<citerefentry/<refentrytitle/geom_uzip/<manvolnum/4//">
 <!ENTITY man.gif.4 "<citerefentry/<refentrytitle/gif/<manvolnum/4//">
+<!ENTITY man.glxsb.4 "<citerefentry/<refentrytitle/glxsb/<manvolnum/4//">
 <!ENTITY man.gre.4 "<citerefentry/<refentrytitle/gre/<manvolnum/4//">
 <!ENTITY man.gsc.4 "<citerefentry/<refentrytitle/gsc/<manvolnum/4//">
 <!ENTITY man.gusc.4 "<citerefentry/<refentrytitle/gusc/<manvolnum/4//">