diff --git a/network/stormshield/snmp/mode/qos.pm b/network/stormshield/snmp/mode/qos.pm
index d020b7ff5..266069e42 100644
--- a/network/stormshield/snmp/mode/qos.pm
+++ b/network/stormshield/snmp/mode/qos.pm
@@ -206,7 +206,7 @@ sub manage_selection {
 
         foreach (('in', 'out')) {
             $result->{'speed_' . $_} = defined($self->{option_results}->{'speed_' . $_}) && $self->{option_results}->{'speed_' . $_} =~ /(\d+)/ ?
-                ($1 * 1000 * 1000): (defined($result->{'speed_' . $_}) ? ($result->{'speed_' . $_} * 1024 * 1000) : 0);
+                ($1 * 1000 * 1000): (defined($result->{'speed_' . $_}) ? ($result->{'speed_' . $_} * 1024 * 8) : 0);
             $result->{'traffic_' . $_} *= 8;
             $result->{'traffic_' . $_ . '_peak'} *= 8;
         }