A Hong Kong court on Monday overturned one of two convictions for seven top democracy activists including media mogul Jimmy Lai over an unauthorized protest in 2019, a narrow victory for the city’s beleaguered opposition.

The Court of Appeal said in a written ruling that there was no evidence the defendants played any role in planning, organizing or issuing any instructions either before or during the march.

Judges Andrew Macrae, Maggie Poon and Anthea Pang let stand an earlier court’s verdict that the seven had participated in the peaceful demonstration at the height of the city’s unrest.