diff --git a/en_US.ISO8859-1/share/sgml/authors.ent b/en_US.ISO8859-1/share/sgml/authors.ent
index bb35a745f3..45cc1897c4 100644
--- a/en_US.ISO8859-1/share/sgml/authors.ent
+++ b/en_US.ISO8859-1/share/sgml/authors.ent
@@ -670,6 +670,8 @@
 
 <!ENTITY a.makc "Max Brazhnikov <email>makc@FreeBSD.org</email>">
 
+<!ENTITY a.mandree "Matthias Andree <email>mandree@FreeBSD.org</email>">
+
 <!ENTITY a.manolis "Manolis Kiagias <email>manolis@FreeBSD.org</email>">
 
 <!ENTITY a.marcel "Marcel Moolenaar <email>marcel@FreeBSD.org</email>">