diff --git a/pandora_server/lib/PandoraFMS/Core.pm b/pandora_server/lib/PandoraFMS/Core.pm index 39d68fe69a..24b89ce1f1 100644 --- a/pandora_server/lib/PandoraFMS/Core.pm +++ b/pandora_server/lib/PandoraFMS/Core.pm @@ -4296,7 +4296,7 @@ sub on_demand_macro($$$$$$;$) { if ($field_value eq ''){ $field_value = 'Module ' . $field_number . " not found"; } - elsif ($unit_mod ne '') { + elsif (defined($unit_mod) && $unit_mod ne '') { $field_value .= $unit_mod; }