diff --git a/gluon/contrib/login_methods/ldap_auth.py b/gluon/contrib/login_methods/ldap_auth.py
index 23b6bba4..65f2cfb9 100644
--- a/gluon/contrib/login_methods/ldap_auth.py
+++ b/gluon/contrib/login_methods/ldap_auth.py
@@ -173,7 +173,6 @@ def ldap_auth(server='ldap', port=None,
                       cert_path=cert_path,
                       cert_file=cert_file,
                       cacert_file=cacert_file,
-                      cert_file=cert_file,
                       key_file=key_file,
                       filterstr=filterstr,
                       username_attrib=username_attrib,
@@ -575,7 +574,6 @@ def ldap_auth(server='ldap', port=None,
                   cert_path=cert_path,
                   cert_file=cert_file,
                   cacert_file=cacert_file,
-                  cert_file=cert_file,
                   key_file=key_file):
         """
         Inicialize ldap connection