diff --git a/doc/overview.sgml b/doc/overview.sgml
index be63b95e..cc44cd02 100644
--- a/doc/overview.sgml
+++ b/doc/overview.sgml
@@ -17,7 +17,7 @@
This guide assumes that you are familiar with PostgreSQL administration and
streaming replication concepts. For further details on streaming
replication, see the PostgreSQL documentation section on
+ url="https://www.postgresql.org/docs/current/warm-standby.html#STREAMING-REPLICATION">
streaming replication.