diff --git a/centreon-plugins/network/lenovo/flexsystem/snmp/mode/components/temperature.pm b/centreon-plugins/network/lenovo/flexsystem/snmp/mode/components/temperature.pm
index b7d0529b4..5c8ac9868 100644
--- a/centreon-plugins/network/lenovo/flexsystem/snmp/mode/components/temperature.pm
+++ b/centreon-plugins/network/lenovo/flexsystem/snmp/mode/components/temperature.pm
@@ -101,7 +101,7 @@ sub check {
         }
         $self->{output}->perfdata_add(
             nlabel => 'hardware.temperature.celsius', unit => 'C',
-            instances => 'switch=' . $instance,
+            instances => 'switch' . $instance,
             value => $temperature,
             warning => $warn,
             critical => $crit