$cmd_flags_to_names{$flag} = $name;
my $opt_string = join '|', $flag, @aliases;
- $opt_string .= MooseX::Getopt::OptionTypeMap->get_option_type($type);
+ $opt_string .= MooseX::Getopt::OptionTypeMap->get_option_type($type) if $type;
my $doc;
$doc = $attr->documentation if $attr->has_documentation;