my $statement = q{UPDATE results
                    SET status = ?, verze = 'N/A'
                    WHERE host = ? AND app = ?;};
  $result = $dbh->do($statement, undef, $status, $host, $app);
  if (! defined $result) { $result = -1; }
  if ($result <= 0) {
    print STDERR "\n" . $0 . ": CHYBA: " . $dbh->errstr . "\n";
    $dbh->rollback();
    return ISHN_ERR_INTERNAL;
  }