diff --git a/app/login.py b/app/login.py
index ebe1b4f2..f5605cba 100644
--- a/app/login.py
+++ b/app/login.py
@@ -76,7 +76,7 @@ def check_in_ldap(user, password):
 	ldap_search_field = sql.get_setting('ldap_search_field')
 	ldap_user_attribute = sql.get_setting('ldap_user_attribute')
 	
-	l = ldap.initialize(server+':'+port)
+	l = ldap.initialize('ldap://{}:{}/'.format(server, port))
 	try:
 		l.protocol_version = ldap.VERSION3
 		l.set_option(ldap.OPT_REFERRALS, 0)