diff --git a/snmp_standard/mode/interfaces.pm b/snmp_standard/mode/interfaces.pm
index c0a9a3a35..3e11c4fda 100644
--- a/snmp_standard/mode/interfaces.pm
+++ b/snmp_standard/mode/interfaces.pm
@@ -201,7 +201,7 @@ sub custom_errors_perfdata {
     if ($self->{instance_mode}->{option_results}->{units_errors} eq '%') {
         $self->{output}->perfdata_add(
             label => 'packets_' . $self->{result_values}->{label2} . '_' . $self->{result_values}->{label1}, unit => '%',
-            nlabel => 'interface.packets.' . $self->{result_values}->{label1} . '.' . $self->{result_values}->{label2} . 's.percentage',
+            nlabel => 'interface.packets.' . $self->{result_values}->{label1} . '.' . $self->{result_values}->{label2} . '.percentage',
             instances => $self->use_instances(extra_instance => $options{extra_instance}) ? $self->{result_values}->{display} : undef,
             value => sprintf("%.2f", $self->{result_values}->{prct}),
             warning => $self->{perfdata}->get_perfdata_for_output(label => 'warning-' . $self->{label}),