Error - KDevelop

[p4s8x]

При написании любого Ру-символа выдает на сохранении:
The document could not be saved, as the selected encoding cannot encode every unicode character in it. If you are unsure of which encoding to use, try UTF-8 or UTF-16.

Как поправить?

[powerfox]

p4s8x, выбрать кодировку UTF-8 или UTF-16: Сервис->Кодировка->Юникод->UTF-8