diff --git a/lib/server.js b/lib/server.js
index cbf110b..c9f6aae 100644
--- a/lib/server.js
+++ b/lib/server.js
@@ -408,7 +408,7 @@ function Server (options) {
 
           if (req.protocolOp === Protocol.LDAP_REQ_BIND && res.status === 0) {
             // 0 length == anonymous bind
-            if (req.dn.rdns.length === 0 && req.credentials === '') {
+            if (req.dn.length === 0 && req.credentials === '') {
               conn.ldap.bindDN = new DN([new dn.RDN({ cn: 'anonymous' })])
             } else {
               conn.ldap.bindDN = req.dn