The pack of dogs released to hunt down the princess consists of Irish Setters, a breed much too peaceful to be used for such a nefarious purpose.
One of three Václav Vorlícek's fairy tale movies based on work of Bozena Nemcová. The other two are Three Wishes for Cinderella (1973) and The Prince and the Evening Star (1979).
Actor Jan Hrusínský was injured during filming when he fell from the hotel he was staying in through the glass ceiling of the hotel restaurant. Most of the shots had to be completely re-arranged so that it would not be noticeable that Prince Jaroslav's leg was in a plaster cast reaching up to his hip.