Under Rule 63(2) of the High Court Rules, 1971, a court may rescind a default judgment where good and sufficient cause is shown. Wilful default occurs when a party, with full knowledge of service or set down and the risks of default, freely decides not to appear. A legal practitioner's negligence in mistaking the hearing time does not constitute wilful default where there was no conscious decision to refrain from appearing, the explanation is plausible, the application for rescission is made timeously, and there are good prospects of success in the main claim. Non-compliance by a legal practitioner is generally treated as non-compliance by the party, but the degree of negligence matters - simple negligence differs from wilful disdain of court rules or gross incompetence.