diff --git a/centreon/common/fortinet/fortigate/snmp/mode/clusterstatus.pm b/centreon/common/fortinet/fortigate/snmp/mode/clusterstatus.pm
index 9c9ca5c64..daaccfc37 100644
--- a/centreon/common/fortinet/fortigate/snmp/mode/clusterstatus.pm
+++ b/centreon/common/fortinet/fortigate/snmp/mode/clusterstatus.pm
@@ -52,6 +52,7 @@ sub custom_status_calc {
     $self->{result_values}->{sync_status} = $options{new_datas}->{$self->{instance} . '_sync_status'};
     $self->{result_values}->{hostname} = $options{new_datas}->{$self->{instance} . '_hostname'};
     $self->{result_values}->{checksum} = $options{new_datas}->{$self->{instance} . '_checksum'};
+    $self->{result_values}->{serial} = $options{new_datas}->{$self->{instance} . '_serial'};
     return 0;
 }