message: 'wallet-xxx' default filename
diff: @@ -280,7 +280,7 @@ bool WalletView::encryptWallet(bool status)
  void WalletView::backupWallet()
  {
  QString filename = GUIUtil::getSaveFileName(this,
  - tr("Backup Wallet"), QString(),
  + tr("Backup Wallet"), QDateTime::currentDateTime().toString("'wallet'-yyyy-MM-dd-hh-mm-ss"),
  tr("Wallet Data (*.dat)"), nullptr);
  if (filename.isEmpty())
  