diff --git a/centreon-plugins/hardware/ups/hp/snmp/mode/time.pm b/centreon-plugins/hardware/ups/hp/snmp/mode/time.pm
index 34fd20ea0..2698da5cc 100644
--- a/centreon-plugins/hardware/ups/hp/snmp/mode/time.pm
+++ b/centreon-plugins/hardware/ups/hp/snmp/mode/time.pm
@@ -24,6 +24,7 @@ use base qw(snmp_standard::mode::ntp);
 
 use strict;
 use warnings;
+use DateTime;
 
 sub get_target_time {
     my ($self, %options) = @_;