diff --git a/share/sgml/urls.ent b/share/sgml/urls.ent
index 9b2596bdbd..45697c34ed 100644
--- a/share/sgml/urls.ent
+++ b/share/sgml/urls.ent
@@ -94,6 +94,8 @@
 <!ENTITY url.articles.console-server.en	"&url.doc.langbase.en;/articles/console-server">
 <!ENTITY url.articles.contributing	"&url.doc.langbase;/articles/contributing">
 <!ENTITY url.articles.contributing.en	"&url.doc.langbase.en;/articles/contributing">
+<!ENTITY url.articles.contributing-ports	"&url.doc.langbase;/articles/contributing-ports">
+<!ENTITY url.articles.contributing-ports.en	"&url.doc.langbase.en;/articles/contributing-ports">
 <!ENTITY url.articles.contributors	"&url.doc.langbase;/articles/contributors">
 <!ENTITY url.articles.contributors.en	"&url.doc.langbase.en;/articles/contributors">
 <!ENTITY url.articles.cvs-freebsd	"&url.doc.langbase;/articles/cvs-freebsd">