World-known evangelist Billy Graham returned to his home in Montreal, N.C., early this afternoon, following surgery to adjust a shunt in his brain.

According to Mission Hospitals’ representative Merrell Gregory, Graham is recovering well, making his physicians pleased with his progress, the Associated Press reported.

Graham, 89, has hydrocephalus, a buildup of fluid within the brain. Last Wednesday, he suffered a 28-minute procedure, which replaced the valve in a shunt installed in 2000 that drains excessive fluid from his brain through a small tube.

The procedure was performed by neurosurgeon Ralph C. Loomis who installed a new valve in the shunt that can be programmed externally t maintain desired fluid levels and pressure.

A week after the procedure, Graham is ready to start exercising again to regain his strength, his representative Larry Ross said according to the AP. He also added that the evangelist is also ready to return to a regular schedule, which includes working on a new book about the challenges and joys of growing old.

Graham was hospitalized at Mission for nearly two weeks last year after experiencing intestinal bleeding caused by an arteriovenous malformation, a tangle of small blood vessels in the lining of the colon. He also has suffered from prostate cancer and macular degeneration.

William Franklin Graham, Jr., KBE, was born in 1918 and has preached in person to more people around the world than anyone who has ever lived. He has been a spiritual adviser to multiple U.S. presidents. Graham said that he and his wife would be buried alongside each other at the Billy Graham Library in his hometown of Charlotte, North Carolina. His wife, Ruth Bell, died in 2007. The two had five children together. Graham has 19 grandchildren and 28 great-grandchildren.