diff --git a/share/sgml/man-refs.ent b/share/sgml/man-refs.ent
index bc4c691c01..267c3a40c4 100644
--- a/share/sgml/man-refs.ent
+++ b/share/sgml/man-refs.ent
@@ -3124,6 +3124,7 @@
 <!ENTITY man.aac.4 "<citerefentry/<refentrytitle/aac/<manvolnum/4//">
 <!ENTITY man.acd.4 "<citerefentry/<refentrytitle/acd/<manvolnum/4//">
 <!ENTITY man.acpi.4 "<citerefentry/<refentrytitle/acpi/<manvolnum/4//">
+<!ENTITY man.acpi.thermal.4 "<citerefentry/<refentrytitle/acpi_thermal/<manvolnum/4//">
 <!ENTITY man.ad.4 "<citerefentry/<refentrytitle/ad/<manvolnum/4//">
 <!ENTITY man.adv.4 "<citerefentry/<refentrytitle/adv/<manvolnum/4//">
 <!ENTITY man.adw.4 "<citerefentry/<refentrytitle/adw/<manvolnum/4//">