diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index 6612f95f9f..4784b4b18e 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -3156,7 +3156,9 @@ include_dir 'conf.d'
use parameters in both and . Parameters from
- will not be used.
+ will not be used,
+ with the exception of
+ which allows a timeline to be selected for recovery.