diff --git a/centreon-plugins/apps/protocols/ntp/plugin.pm b/centreon-plugins/apps/protocols/ntp/plugin.pm
index 9147f005e..6b659809e 100644
--- a/centreon-plugins/apps/protocols/ntp/plugin.pm
+++ b/centreon-plugins/apps/protocols/ntp/plugin.pm
@@ -32,7 +32,8 @@ sub new {
 
 	$self->{version} = '0.1';
 	%{$self->{modes}} = (
-                          'response-time'     => 'apps::protocols::ntp::mode::responsetime',
+                          'response-time'	=> 'apps::protocols::ntp::mode::responsetime',
+                          'offset'		=> 'apps::protocols::ntp::mode::offset',
                         );
 
 	return $self;