diff --git a/network/alcatel/common/mode/stack.pm b/network/alcatel/common/mode/stack.pm
deleted file mode 100644
index 7d74f99ae..000000000
--- a/network/alcatel/common/mode/stack.pm
+++ /dev/null
@@ -1,135 +0,0 @@
-################################################################################
-# Copyright 2005-2013 MERETHIS
-# Centreon is developped by : Julien Mathis and Romain Le Merlus under
-# GPL Licence 2.0.
-# 
-# This program is free software; you can redistribute it and/or modify it under 
-# the terms of the GNU General Public License as published by the Free Software 
-# Foundation ; either version 2 of the License.
-# 
-# This program is distributed in the hope that it will be useful, but WITHOUT ANY
-# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A 
-# PARTICULAR PURPOSE. See the GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License along with 
-# this program; if not, see <http://www.gnu.org/licenses>.
-# 
-# Linking this program statically or dynamically with other modules is making a 
-# combined work based on this program. Thus, the terms and conditions of the GNU 
-# General Public License cover the whole combination.
-# 
-# As a special exception, the copyright holders of this program give MERETHIS 
-# permission to link this program with independent modules to produce an executable, 
-# regardless of the license terms of these independent modules, and to copy and 
-# distribute the resulting executable under terms of MERETHIS choice, provided that 
-# MERETHIS also meet, for each linked independent module, the terms  and conditions 
-# of the license of that module. An independent module is a module which is not 
-# derived from this program. If you modify this program, you may extend this 
-# exception to your version of the program, but you are not obliged to do so. If you
-# do not wish to do so, delete this exception statement from your version.
-# 
-# For more information : contact@centreon.com
-# Authors : Quentin Garnier <qgarnier@merethis.com>
-#
-####################################################################################
-
-package network::alcatel::common::mode::stack;
-
-use base qw(centreon::plugins::mode);
-
-use strict;
-use warnings;
-
-my %map_role = (
-    1 => 'master',
-    2 => 'member',
-    3 => 'notMember',
-    4 => 'standby'
-);
-my %states = (
-    1 => ['waiting', 'WARNING'], 
-    2 => ['progressing', 'WARNING'], 
-    3 => ['added', 'WARNING'], 
-    4 => ['ready', 'OK'],
-    5 => ['sdmMismatch', 'CRITICAL'],
-    6 => ['verMismatch', 'CRITICAL'],
-    7 => ['featureMismatch', 'CRITICAL'],
-    8 => ['newMasterInit', 'WARNING'],
-    9 => ['provisioned', 'OK'],
-    10 => ['invalid', 'WARNING'],
-    11 => ['removed', 'WARNING'],
-);
-
-sub new {
-    my ($class, %options) = @_;
-    my $self = $class->SUPER::new(package => __PACKAGE__, %options);
-    bless $self, $class;
-    
-    $self->{version} = '1.0';
-    $options{options}->add_options(arguments =>
-                                {
-                                });
-
-    return $self;
-}
-
-sub check_options {
-    my ($self, %options) = @_;
-    $self->SUPER::init(%options);
-}
-
-sub run {
-    my ($self, %options) = @_;
-    # $options{snmp} = snmp object
-    $self->{snmp} = $options{snmp};
-
-    #my $oid_cswRingRedundant = '.1.3.6.1.4.1.9.9.500.1.1.3.0';
-    #my $oid_cswSwitchRole = '.1.3.6.1.4.1.9.9.500.1.2.1.1.3';
-    #my $oid_cswSwitchState = '.1.3.6.1.4.1.9.9.500.1.2.1.1.6';
-    #my $result = $self->{snmp}->get_leef(oids => [$oid_cswRingRedundant], nothing_quit => 1);
-    #my $result_state = $self->{snmp}->get_table(oid => $oid_cswSwitchState, nothing_quit => 1);
-    #my $result_role = $self->{snmp}->get_table(oid => $oid_cswSwitchRole);
-    
-    #$self->{output}->output_add(severity => 'OK',
-    #                            short_msg => 'Stack ring is redundant');
-    #if ($result->{$oid_cswRingRedundant} != 1) {
-    #    $self->{output}->output_add(severity => 'WARNING',
-    #                                short_msg => 'Stack ring is not redundant');
-    #}
-    
-    #foreach my $oid (keys %$result_state) {
-    #    $oid =~ /\.([0-9]+)$/;
-    #    my $instance = $1;
-
-    #    my $state = $result_state->{$oid};
-    #    my $role = defined($result_role->{$oid_cswSwitchRole . '.' . $instance}) ? $result_role->{$oid_cswSwitchRole . '.' . $instance} : 'unknown';
-        # .1001, .2001 the instance.
-    #    my $number = int(($instance - 1) / 1000);
-        
-    #    $self->{output}->output_add(long_msg => sprintf("Member '%s' state is %s [Role is '%s']", $number,
-    #                                        ${$states{$state}}[0], $map_role{$role}));
-    #    if (${$states{$state}}[1] ne 'OK') {
-    #         $self->{output}->output_add(severity => ${$states{$state}}[1],
-    #                                    short_msg => sprintf("Member '%s' state is %s", $number,
-    #                                                         ${$states{$state}}[0]));
-    #    }
-    #}
-    
-    $self->{output}->display();
-    $self->{output}->exit();
-}
-
-1;
-
-__END__
-
-=head1 MODE
-
-Check Cisco Stack (CISCO-STACKWISE-MIB).
-
-=over 8
-
-=back
-
-=cut
-    
\ No newline at end of file
diff --git a/network/alcatel/omniswitch/6850/plugin.pm b/network/alcatel/omniswitch/6850/plugin.pm
index 95bd9b861..460cddb9a 100644
--- a/network/alcatel/omniswitch/6850/plugin.pm
+++ b/network/alcatel/omniswitch/6850/plugin.pm
@@ -54,7 +54,6 @@ sub new {
                         'memory'            => 'network::alcatel::common::mode::memory',
                         'packet-errors'     => 'snmp_standard::mode::packeterrors',
                         'spanning-tree'     => 'snmp_standard::mode::spanningtree',
-                        #'stack'             => 'network::alcatel::common::mode::stack',
                         'traffic'           => 'snmp_standard::mode::traffic',
                         );