diff --git a/reference/ldap/book.xml b/reference/ldap/book.xml
index 17210bcae3..ab66b8e830 100644
--- a/reference/ldap/book.xml
+++ b/reference/ldap/book.xml
@@ -77,6 +77,11 @@
OpenLDAP Project
+
+
+ Internet Engineering Taskforce RFCs 4510 through 4519.
+
+
diff --git a/reference/ldap/functions/ldap-search.xml b/reference/ldap/functions/ldap-search.xml
index ae8d372292..83b6a2a7ac 100644
--- a/reference/ldap/functions/ldap-search.xml
+++ b/reference/ldap/functions/ldap-search.xml
@@ -68,7 +68,8 @@
The search filter can be simple or advanced, using boolean operators in
the format described in the LDAP documentation (see the Netscape Directory SDK for full
+ xlink:href="&url.ldap.filters;">Netscape Directory SDK or
+ RFC4515 for full
information on filters).