Tomás used his presidential prerogative just once during his first decade in office. In September 1968, Salazar was incapacitated by a severe stroke. Believing that Salazar did not have long to live, Tomás dismissed Salazar and appointed Marcello Caetano to succeed him. For all intents and purposes, the president’s power to dismiss the prime minister had been the only check on Salazar's power. However, he never informed Salazar that he had been removed as leader of the regime he had largely created. Reportedly, when Salazar died two years later, he believed still that "he" was prime minister.