diff --git a/apps/vmware/connector/mode/memoryvm.pm b/apps/vmware/connector/mode/memoryvm.pm
index b58dbbbff..2982520d5 100644
--- a/apps/vmware/connector/mode/memoryvm.pm
+++ b/apps/vmware/connector/mode/memoryvm.pm
@@ -50,7 +50,7 @@ sub custom_usage_perfdata {
 
     $self->{output}->perfdata_add(
         label => $self->{result_values}->{label_ref} . '_' . $label, unit => 'B',
-        instances => $self->use_instances(extra_instance => $options{extra_instance}) ? $self->{result_values}->{display} : undef,
+        instances => $self->use_instances(extra_instance => $options{extra_instance}) ? $self->{instance} : undef,
         nlabel => $nlabel,
         value => $value_perf,
         warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{thlabel}, %total_options),