diff --git a/apps/backup/netbackup/local/mode/jobstatus.pm b/apps/backup/netbackup/local/mode/jobstatus.pm
index 56371ad65..a09931b6c 100644
--- a/apps/backup/netbackup/local/mode/jobstatus.pm
+++ b/apps/backup/netbackup/local/mode/jobstatus.pm
@@ -118,7 +118,7 @@ sub set_counters {
     ];
 
     $self->{maps_counters}->{global} = [
-        { label => 'total', nlabel = 'jobs.total.count', set => {
+        { label => 'total', nlabel => 'jobs.total.count', set => {
                 key_values => [ { name => 'total' } ],
                 output_template => 'total jobs : %s',
                 perfdatas => [
diff --git a/apps/virtualization/ovirt/custom/api.pm b/apps/virtualization/ovirt/custom/api.pm
index 3b32a543d..4b5bdae6b 100644
--- a/apps/virtualization/ovirt/custom/api.pm
+++ b/apps/virtualization/ovirt/custom/api.pm
@@ -59,7 +59,7 @@ sub new {
     $self->{output} = $options{output};
     $self->{http} = centreon::plugins::http->new(%options);
     $self->{cache} = centreon::plugins::statefile->new(%options);
-    
+
     return $self;
 }
 
@@ -231,7 +231,7 @@ sub get_host_statistics {
 sub cache_hosts {
     my ($self, %options) = @_;
 
-    $self->{cache_hosts} = centreon::plugins::statefile->new(%options);
+    $self->{cache_hosts} = centreon::plugins::statefile->new(output => $self->{output});
     $self->{cache_hosts}->check_options(option_results => $self->{option_results});
     my $has_cache_file = $self->{cache_hosts}->read(statefile => 'cache_ovirt_hosts_' . md5_hex($self->{hostname}) . '_' . md5_hex($self->{api_username}));
     my $timestamp_cache = $self->{cache_hosts}->get(name => 'last_timestamp');
diff --git a/centreon/common/powershell/exchange/outlookwebservices.pm b/centreon/common/powershell/exchange/outlookwebservices.pm
index f34341c33..f28d11adb 100644
--- a/centreon/common/powershell/exchange/outlookwebservices.pm
+++ b/centreon/common/powershell/exchange/outlookwebservices.pm
@@ -82,7 +82,7 @@ sub check {
         
         $checked++;
 
-        my $status = 'ok'
+        my $status = 'ok';
         if (defined($self->{option_results}->{critical}) && $self->{option_results}->{critical} ne '' &&
             $self->{output}->test_eval(test => $self->{option_results}->{critical}, values => $self->{data})) {
             $status = 'critical';
diff --git a/cloud/cadvisor/restapi/mode/diskio.pm b/cloud/cadvisor/restapi/mode/diskio.pm
index 1643b8527..7a24e9621 100644
--- a/cloud/cadvisor/restapi/mode/diskio.pm
+++ b/cloud/cadvisor/restapi/mode/diskio.pm
@@ -112,7 +112,7 @@ sub manage_selection {
         my $read_io = {};
         my $write_io = {};
 
-        if (keys $first_stat->{diskio}) {
+        if (defined($first_stat->{diskio})) {
             $self->{containers}->{$container_id} = {
                 node_name           => $result->{$container_id}->{NodeName},
                 display             => defined($self->{option_results}->{use_name}) ? $name : $container_id,
diff --git a/database/firebird/mode/users.pm b/database/firebird/mode/users.pm
index 697c3f70e..565f38f23 100644
--- a/database/firebird/mode/users.pm
+++ b/database/firebird/mode/users.pm
@@ -24,18 +24,16 @@ use base qw(centreon::plugins::mode);
 
 use strict;
 use warnings;
-use DBD::Firebird;
 
 sub new {
     my ($class, %options) = @_;
     my $self = $class->SUPER::new(package => __PACKAGE__, %options);
     bless $self, $class;
     
-    $options{options}->add_options(arguments =>
-                                { 
-                                  "warning:s"               => { name => 'warning', },
-                                  "critical:s"              => { name => 'critical', },
-                                });
+    $options{options}->add_options(arguments => { 
+        'warning:s'  => { name => 'warning' },
+        'critical:s' => { name => 'critical' }
+    });
 
     return $self;
 }
@@ -56,13 +54,10 @@ sub check_options {
 
 sub run {
     my ($self, %options) = @_;
-    # $options{sql} = sqlmode object
-    $self->{sql} = $options{sql};
 
-    $self->{sql}->connect();
-    
-    $self->{sql}->query(query => q{SELECT COUNT(MON$USER) FROM MON$ATTACHMENTS WHERE MON$ATTACHMENT_ID <> CURRENT_CONNECTION});
-    my $result = $self->{sql}->fetchrow_array();
+    $options{sql}->connect();
+    $options{sql}->query(query => q{SELECT COUNT(MON$USER) FROM MON$ATTACHMENTS WHERE MON$ATTACHMENT_ID <> CURRENT_CONNECTION});
+    my $result = $options{sql}->fetchrow_array();
 
     if (!defined($result)) {
         $self->{output}->add_option_msg(short_msg => "Cannot get users.");
@@ -72,13 +67,17 @@ sub run {
     my $exit_code = $self->{perfdata}->threshold_check(value => $result, threshold => [ { label => 'critical', exit_litteral => 'critical' }, { label => 'warning', exit_litteral => 'warning' } ]);
     my $msg = sprintf("%d user(s) connect to database", $result);
     
-    $self->{output}->output_add(severity => $exit_code,
-                                short_msg => $msg);
-    $self->{output}->perfdata_add(label => 'users', value => $result,
-                                  nlabel => 'users.count',
-                                  warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
-                                  critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
-                                  min => 0);
+    $self->{output}->output_add(
+        severity => $exit_code,
+        short_msg => $msg
+    );
+    $self->{output}->perfdata_add(
+        label => 'users', value => $result,
+        nlabel => 'users.count',
+        warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning'),
+        critical => $self->{perfdata}->get_perfdata_for_output(label => 'critical'),
+        min => 0
+    );
 
     $self->{output}->display();
     $self->{output}->exit();
diff --git a/hardware/server/hp/oneview/restapi/custom/api.pm b/hardware/server/hp/oneview/restapi/custom/api.pm
index 7a34d120c..6c4c4b20a 100644
--- a/hardware/server/hp/oneview/restapi/custom/api.pm
+++ b/hardware/server/hp/oneview/restapi/custom/api.pm
@@ -75,7 +75,7 @@ sub set_defaults {}
 sub check_options {
     my ($self, %options) = @_;
 
-    $self->{hostname} = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : undef;
+    $self->{hostname} = (defined($self->{option_results}->{hostname})) ? $self->{option_results}->{hostname} : '';
     $self->{port} = (defined($self->{option_results}->{port})) ? $self->{option_results}->{port} : 443;
     $self->{proto} = (defined($self->{option_results}->{proto})) ? $self->{option_results}->{proto} : 'https';
     $self->{timeout} = (defined($self->{option_results}->{timeout})) ? $self->{option_results}->{timeout} : 30;