diff --git a/centreon-plugins/network/kemp/snmp/mode/rsstatus.pm b/centreon-plugins/network/kemp/snmp/mode/rsstatus.pm
index 703fe851d..f221a1001 100644
--- a/centreon-plugins/network/kemp/snmp/mode/rsstatus.pm
+++ b/centreon-plugins/network/kemp/snmp/mode/rsstatus.pm
@@ -196,7 +196,9 @@ sub manage_selection {
         
         $self->{rs}->{$instance} = { display => $display_name, 
                                      status => $result->{rSstate}, 
-                                     rSInBytes => $result->{rSInBytes} * 8, rSOutBytes => $result->{rSOutBytes} * 8, rSActiveConns => $result->{rSActiveConns} };
+                                     rSInBytes => defined($result->{rSInBytes}) ? $result->{rSInBytes} * 8 : undef, 
+                                     rSOutBytes => defined($result->{rSOutBytes}) ? $result->{rSOutBytes} * 8 : undef, 
+                                     rSActiveConns => $result->{rSActiveConns} };
     }
     
     if (scalar(keys %{$self->{rs}}) <= 0) {
diff --git a/centreon-plugins/network/kemp/snmp/mode/vsstatus.pm b/centreon-plugins/network/kemp/snmp/mode/vsstatus.pm
index 3f73101dc..95b406aab 100644
--- a/centreon-plugins/network/kemp/snmp/mode/vsstatus.pm
+++ b/centreon-plugins/network/kemp/snmp/mode/vsstatus.pm
@@ -194,7 +194,9 @@ sub manage_selection {
         
         $self->{vs}->{$instance} = { display => $result->{vSname}, 
                                      status => $result->{vSstate}, 
-                                     vSInBytes => $result->{vSInBytes} * 8, vSOutBytes => $result->{vSOutBytes} * 8, vSActivConns => $result->{vSActivConns} };
+                                     vSInBytes => defined($result->{vSInBytes}) ? $result->{vSInBytes} * 8 : undef, 
+                                     vSOutBytes => defined($result->{vSOutBytes}) ? $result->{vSOutBytes} * 8 : undef, 
+                                     vSActivConns => $result->{vSActivConns} };
     }
     
     if (scalar(keys %{$self->{vs}}) <= 0) {