diff --git a/share/sgml/man-refs.ent b/share/sgml/man-refs.ent
index 7bb651656f..14c4d11df6 100644
--- a/share/sgml/man-refs.ent
+++ b/share/sgml/man-refs.ent
@@ -3409,6 +3409,7 @@
 <!ENTITY man.ng.l2tp.4 "<citerefentry/<refentrytitle/ng_l2tp/<manvolnum/4//">
 <!ENTITY man.ng.lmi.4 "<citerefentry/<refentrytitle/ng_lmi/<manvolnum/4//">
 <!ENTITY man.ng.mppc.4 "<citerefentry/<refentrytitle/ng_mppc/<manvolnum/4//">
+<!ENTITY man.ng.netflow.4 "<citerefentry/<refentrytitle/ng_netflow/<manvolnum/4//">
 <!ENTITY man.ng.one2many.4 "<citerefentry/<refentrytitle/ng_one2many/<manvolnum/4//">
 <!ENTITY man.ng.ppp.4 "<citerefentry/<refentrytitle/ng_ppp/<manvolnum/4//">
 <!ENTITY man.ng.pppoe.4 "<citerefentry/<refentrytitle/ng_pppoe/<manvolnum/4//">