diff --git a/doc/man/man5/slapd.conf.5 b/doc/man/man5/slapd.conf.5
index 837a2f03cb..99f4154f41 100644
--- a/doc/man/man5/slapd.conf.5
+++ b/doc/man/man5/slapd.conf.5
@@ -1096,7 +1096,9 @@ Controls whether
 .B slapd
 will automatically maintain the 
 modifiersName, modifyTimestamp, creatorsName, and 
-createTimestamp attributes for entries.  By default, lastmod is on.
+createTimestamp attributes for entries. It also controls
+the entryCSN and entryUUID attributes, which are needed
+by the syncrepl provider. By default, lastmod is on.
 .TP
 .B limits <who> <limit> [<limit> [...]]
 Specify time and size limits based on who initiated an operation.