diff --git a/share/sgml/urls.ent b/share/sgml/urls.ent
index 45697c34ed..d1ff84e8e4 100644
--- a/share/sgml/urls.ent
+++ b/share/sgml/urls.ent
@@ -136,6 +136,8 @@
 <!ENTITY url.articles.mh.en		"&url.doc.langbase.en;/articles/mh">
 <!ENTITY url.articles.multi-os		"&url.doc.langbase;/articles/multi-os">
 <!ENTITY url.articles.multi-os.en	"&url.doc.langbase.en;/articles/multi-os">
+<!ENTITY url.articles.nanobsd		"&url.doc.langbase;/articles/nanobsd">
+<!ENTITY url.articles.nanobsd.en	"&url.doc.langbase.en;/articles/nanobsd">
 <!ENTITY url.articles.new-users		"&url.doc.langbase;/articles/new-users">
 <!ENTITY url.articles.new-users.en	"&url.doc.langbase.en;/articles/new-users">
 <!ENTITY url.articles.pam		"&url.doc.langbase;/articles/pam">