diff --git a/hardware/ups/powerware/snmp/mode/outputsource.pm b/hardware/ups/powerware/snmp/mode/outputsource.pm
index 9f12397ee..cebbd2fb0 100644
--- a/hardware/ups/powerware/snmp/mode/outputsource.pm
+++ b/hardware/ups/powerware/snmp/mode/outputsource.pm
@@ -69,12 +69,12 @@ sub check_options {
     $self->{overload_th} = {};
     foreach my $val (@{$self->{option_results}->{threshold_overload}}) {
         if ($val !~ /^(.*?),(.*)$/) {
-            $self->{output}->add_option_msg(short_msg => "Wrong treshold-overload option '" . $val . "'.");
+            $self->{output}->add_option_msg(short_msg => "Wrong threshold-overload option '" . $val . "'.");
             $self->{output}->option_exit();
         }
         my ($section, $status, $filter) = ('osource', $1, $2);
         if ($self->{output}->is_litteral_status(status => $status) == 0) {
-            $self->{output}->add_option_msg(short_msg => "Wrong treshold-overload status '" . $val . "'.");
+            $self->{output}->add_option_msg(short_msg => "Wrong threshold-overload status '" . $val . "'.");
             $self->{output}->option_exit();
         }
         $self->{overload_th}->{$section} = [] if (!defined($self->{overload_th}->{$section}));