diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index 101a754332a..9bc047abd04 100644
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -2110,7 +2110,7 @@ pg_dumpall -p 5432 | psql -d postgres -p 5433
are also checked if the file root.crl exists.
(See >
+ url="http://h71000.www7.hp.com/doc/83final/ba554_90007/ch04s02.html">>
for diagrams showing SSL certificate usage.)