diff --git a/auth.py b/auth.py
index f740bb7..d8a7441 100644
--- a/auth.py
+++ b/auth.py
@@ -17,7 +17,8 @@ def form():
 
 @app.route('/', methods=['POST'])
 def login():
-    conn = connect_to_ldap()
+    conn = ldap.initialize(app.config['LDAP_URL'])
+    conn.start_tls_s()
     res,code = 'OK', 200
     try:
         conn.simple_bind_s(app.config['DN_STRING'] % request.form['login'],