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The Zhmaylo uprising (Polish: Powstanie Żmajły) was a Cossack rebellion headed by Marek Zhmaylo against the Polish–Lithuanian Commonwealth in 1625. On 5 November Marek Zhmaylo was deprived of his title and Hetman Mykhailo Doroshenko was chosen to sign the Treaty of Kurukove, pledging allegiance to the Crown of the Kingdom of Poland.