diff --git a/powerdnsadmin/models/user.py b/powerdnsadmin/models/user.py
index a1155c3..1e39569 100644
--- a/powerdnsadmin/models/user.py
+++ b/powerdnsadmin/models/user.py
@@ -126,7 +126,6 @@ class User(db.Model):
         conn = ldap.initialize(Setting().get('ldap_uri'))
         conn.set_option(ldap.OPT_REFERRALS, ldap.OPT_OFF)
         conn.set_option(ldap.OPT_PROTOCOL_VERSION, 3)
-        conn.set_option(ldap.OPT_X_TLS, ldap.OPT_X_TLS_DEMAND)
         conn.set_option(ldap.OPT_X_TLS_DEMAND, True)
         conn.set_option(ldap.OPT_DEBUG_LEVEL, 255)
         conn.protocol_version = ldap.VERSION3