diff --git a/doc/guide/admin/slapdconf2.sdf b/doc/guide/admin/slapdconf2.sdf
index 8318dc933b6c91812fd64c60d4d3057b15ae29cf..a14675c9c02ca79d73f54c4e989fbef26258d70a 100644
--- a/doc/guide/admin/slapdconf2.sdf
+++ b/doc/guide/admin/slapdconf2.sdf
@@ -636,8 +636,8 @@ replication consumer site running a syncrepl replication engine.
 The master database is located at the replication provider site
 specified by the {{EX:provider}} parameter. The replica database is
 kept up-to-date with the master content using the LDAP Content
-Synchronization protocol. See {{EX:draft-zeilenga-ldup-sync-xx.txt}}
-({{a work in progress}}) for more information on the protocol.
+Synchronization protocol. See {{REF:RFC4533}}
+for more information on the protocol.
 
 The {{EX:rid}} parameter is used for identification of the current
 {{EX:syncrepl}} directive within the replication consumer server,
diff --git a/doc/guide/admin/slapdconfig.sdf b/doc/guide/admin/slapdconfig.sdf
index 5302618f4c4d0023ed9ef236e22ed4117e509be9..0ad1b2308c40de5d74e1e9640f448dfed38decf7 100644
--- a/doc/guide/admin/slapdconfig.sdf
+++ b/doc/guide/admin/slapdconfig.sdf
@@ -439,8 +439,8 @@ replication consumer site running a syncrepl replication engine.
 The master database is located at the replication provider site
 specified by the {{EX:provider}} parameter. The replica database is
 kept up-to-date with the master content using the LDAP Content
-Synchronization protocol. See {{EX:draft-zeilenga-ldup-sync-xx.txt}}
-({{a work in progress}}) for more information on the protocol.
+Synchronization protocol. See {{REF:RFC4533}}
+for more information on the protocol.
 
 The {{EX:rid}} parameter is used for identification of the current
 {{EX:syncrepl}} directive within the replication consumer server,