diff --git a/centreon-plugins/storage/qnap/snmp/mode/upgrade.pm b/centreon-plugins/storage/qnap/snmp/mode/upgrade.pm
deleted file mode 100644
index 882c1470f..000000000
--- a/centreon-plugins/storage/qnap/snmp/mode/upgrade.pm
+++ /dev/null
@@ -1,111 +0,0 @@
-#
-# Copyright 2021 Centreon (http://www.centreon.com/)
-#
-# Centreon is a full-fledged industry-strength solution that meets
-# the needs in IT infrastructure and application monitoring for
-# service performance.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-#
-
-package storage::qnap::snmp::mode::upgrade;
-
-use base qw(centreon::plugins::templates::counter);
-
-use strict;
-use warnings;
-use centreon::plugins::templates::catalog_functions qw(catalog_status_threshold_ng);
-
-sub set_counters {
-    my ($self, %options) = @_;
-
-    $self->{maps_counters_type} = [
-        { name => 'global', type => 0 }
-    ];
-
-    $self->{maps_counters}->{global} = [
-        { label => 'status', type => 2, warning_default => '%{upgrade} != 0', set => {
-                key_values => [
-                    { name => 'model' }, { name => 'version' }, { name => 'upgrade' }
-                ],
-                closure_custom_output => $self->can('custom_status_output'),
-                closure_custom_perfdata => sub { return 0; },
-                closure_custom_threshold_check => \&catalog_status_threshold_ng
-            }
-        }
-    ];
-}
-
-sub custom_status_output {
-    my ($self, %options) = @_;
-
-    return sprintf(
-        "'%s': version is '%s', upgrade is '%s'",
-        $self->{result_values}->{model},
-        $self->{result_values}->{version},
-        $self->{result_values}->{upgrade} ? 'available' : 'unavailable'
-    );
-}
-
-sub new {
-    my ($class, %options) = @_;
-    my $self = $class->SUPER::new(package => __PACKAGE__, %options, force_new_perfdata => 1);
-    bless $self, $class;
-
-    $options{options}->add_options(arguments => {
-    });
-
-    return $self;
-}
-
-my $mapping = {
-    model   => { oid => '.1.3.6.1.4.1.55062.1.12.3' }, # systemModel
-    version => { oid => '.1.3.6.1.4.1.55062.1.12.6' }, # firmwareVersion
-    upgrade => { oid => '.1.3.6.1.4.1.55062.1.12.7' } # firmwareUpgradeAvailable
-};
-
-sub manage_selection {
-    my ($self, %options) = @_;
-
-    my $snmp_result = $options{snmp}->get_leef(
-        oids => [ map($_->{oid} . '.0', values(%$mapping)) ],
-        nothing_quit => 1
-    );
-    $snmp_result->{$mapping->{version}->{oid} . '.0'} =~ s/\r*\n*$//;
-    $self->{global} = $options{snmp}->map_instance(mapping => $mapping, results => $snmp_result, instance => 0);
-
-}
-
-1;
-
-__END__
-
-=head1 MODE
-
-Check upgrade status
-
-=over 8
-
-=item B<--warning-status>
-
-Set warning threshold for status (Default : '%{upgrade} != 0').
-Can used special variables like: %{model}, %{version}, %{upgrade}
-
-=item B<--critical-status>
-
-Set critical threshold for status.
-Can used special variables like: %{model}, %{version}, %{upgrade}
-
-=back
-
-=cut
diff --git a/centreon-plugins/storage/qnap/snmp/plugin.pm b/centreon-plugins/storage/qnap/snmp/plugin.pm
index 22fe79c65..78d8f29a4 100644
--- a/centreon-plugins/storage/qnap/snmp/plugin.pm
+++ b/centreon-plugins/storage/qnap/snmp/plugin.pm
@@ -40,7 +40,6 @@ sub new {
         'pools'           => 'storage::qnap::snmp::mode::pools',
         'storage'         => 'snmp_standard::mode::storage',
         'time'            => 'snmp_standard::mode::ntp',
-        'upgrade'         => 'storage::qnap::snmp::mode::upgrade',
         'uptime'          => 'snmp_standard::mode::uptime',
         'volumes'         => 'storage::qnap::snmp::mode::volumes'
     };