diff --git a/docs/ref/settings.txt b/docs/ref/settings.txt
index 1db9b4029ba..c085ea25055 100644
--- a/docs/ref/settings.txt
+++ b/docs/ref/settings.txt
@@ -469,8 +469,10 @@ this value is assumed to be the host.
 
 If you're using PostgreSQL, by default (empty :setting:`HOST`), the connection
 to the database is done through UNIX domain sockets ('local' lines in
-``pg_hba.conf``). If you want to connect through TCP sockets, set
-:setting:`HOST` to 'localhost' or '127.0.0.1' ('host' lines in ``pg_hba.conf``).
+``pg_hba.conf``). If your UNIX domain socket is not in the standard location,
+use the same value of ``unix_socket_directory`` from ``postgresql.conf``.
+If you want to connect through TCP sockets, set :setting:`HOST` to 'localhost'
+or '127.0.0.1' ('host' lines in ``pg_hba.conf``).
 On Windows, you should always define :setting:`HOST`, as UNIX domain sockets
 are not available.