What is "anti-machiavel"

Anti-Machiavel is an 18th-century essay by Frederick the Great, King of Prussia and patron of Voltaire, consisting of a chapter-by-chapter rebuttal of The Prince, the 16th-century book by Niccolò Machiavelli, and Machiavellianism in general. It was first published in September 1740, a few months after Frederick became king.