The Cape High Court dismissed with costs on Friday ANC MP Winnie Madikizela-Mandela's bid to stop National Assembly Speaker Frene Ginwala publicly reprimanding her.

The reprimand was recommended by Parliament's joint ethics committee after it last year found she had not disclosed some R55,000 a month in donations and a financial interest in the Winnie Mandela Family Museum in Soweto.

Judges Hennie Nel and Jerome Ngwenya made the ruling on Friday after judgment in the case was reserved on April 14.

With acknowledgements to Sapa.