diff --git a/share/xml/man-refs.ent b/share/xml/man-refs.ent
index 6d4916baa0..7a3bffece0 100644
--- a/share/xml/man-refs.ent
+++ b/share/xml/man-refs.ent
@@ -523,6 +523,7 @@
 <!ENTITY man.printenv.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>printenv</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
 <!ENTITY man.printf.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>printf</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
 <!ENTITY man.procstat.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>procstat</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
+<!ENTITY man.protect.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>protect</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
 <!ENTITY man.ps.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>ps</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
 <!ENTITY man.psbb.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>psbb</refentrytitle><manvolnum>1</manvolnum></citerefentry>">
 <!ENTITY man.psroff.1 "<citerefentry xmlns='http://docbook.org/ns/docbook'><refentrytitle>psroff</refentrytitle><manvolnum>1</manvolnum></citerefentry>">