diff --git a/doc/rippled-example.cfg b/doc/rippled-example.cfg
index 9c00ecebc8..d922cd52d9 100644
--- a/doc/rippled-example.cfg
+++ b/doc/rippled-example.cfg
@@ -477,6 +477,8 @@
 #   need to serve clients can set this to "none".  Servers that want complete
 #   history can set this to "full".
 #
+#   This must be less than or equal to online_delete (if online_delete is used)
+#
 #   The default is: 256
 #
 #