ARTICLE 19 submitted an expert opinion to the 8th Chamber of Court of Cassation in Türkiye in the case of journalist Sinan Aygül, currently facing criminal charges for ‘disinformation’ in response to his journalistic and social media activity. Aygül is the first journalist in the country to be prosecuted and convicted under this overbroad legislation and now faces a 10-month prison sentence. ARTICLE 19 calls on the Court to acquit him of all charges. Additionally, in their expert opinion, we examine the compatibility of the provisions under which Aygül was charged with international and European standards on freedom of expression and urge the government to repeal them.