diff --git a/share/sgml/man-refs.ent b/share/sgml/man-refs.ent
index 250b55bc08..852fa97185 100644
--- a/share/sgml/man-refs.ent
+++ b/share/sgml/man-refs.ent
@@ -3234,6 +3234,7 @@
 <!ENTITY man.fwohci.4 "<citerefentry/<refentrytitle/fwohci/<manvolnum/4//">
 <!ENTITY man.fxp.4 "<citerefentry/<refentrytitle/fxp/<manvolnum/4//">
 <!ENTITY man.gbde.4 "<citerefentry/<refentrytitle/gbde/<manvolnum/4//">
+<!ENTITY man.gconcat.8 "<citerefentry/<refentrytitle/gconcat/<manvolnum/8//">
 <!ENTITY man.gem.4 "<citerefentry/<refentrytitle/gem/<manvolnum/4//">
 <!ENTITY man.geom.4 "<citerefentry/<refentrytitle/geom/<manvolnum/4//">
 <!ENTITY man.gif.4 "<citerefentry/<refentrytitle/gif/<manvolnum/4//">