In addition, John supported the monastic reform movement at Cluny Abbey. He confirmed the strict rule of Cluny for the monks there. He then wrote to King Rudolph of France, as well as local bishops and counts, with instructions to restore to Cluny the property of which Guido, abbot of Gigny Abbey, had taken without permission, and to put the monastery under their protection. In 926, he increased the land attached to the Subiaco Abbey in exchange for the monks reciting 100 Kyrie eleisons for the salvation of his soul.