Prado left Peru and settled again in Paris. He made a brief visit to his homeland as he commemorated the centenary of the Battle of Callao (May 2, 1966), when he was paid a tribute for being the son of President Mariano Ignacio Prado, who drove to Peru during the last stage of the conflict with Spain in 1865–66. He died in the French capital the following year. He was buried in the Presbítero Maestro Cemetery, next to his father.