The allegory of the Wheel of Fortune is a recurring theme in medieval thought, particularly in Philosophy and Literature. The notion of fortune was inherited from a double tradition and adapted by Ausiàs March (c.1397-1439) to literary use. We must, therefore, deal with this allegory in the Dictats, by March, and show how the Valencian poet literarily developed the theme of the instability of the Wheel of Fortune in his poems.