Rock’n’roll pioneer Bo Diddley went through his second serious health scare this year, after suffering a heart attack late last week.

It was back in May that the legendary singer and guitarist suffered a stroke after giving a concert in Council Bluffs, Iowa. He was hospitalized and placed in the intensive care unit at Creighton University Medical Center in Omaha, Nebraska.

His publicist said at the time that the tests performed in the hospital showed the stroke affected the left side of his brain, impairing his speech and speech recognition.

Barely four months later, the veteran rock’n’roller is once more in hospital. Publicist Susan Clary said he suffered a heart attack last week but is now listed in stable condition at a Florida hospital.

During a routine medical checkup last Friday, Diddley reportedly complained of dizziness and nausea. He was taken to North Florida Regional Medical Center in Gainsville, near his hometown of Archer and placed in the intensive care unit.

Clary said he is now in the cardiac care unit. “He is conscious,” Clary said. “The situation is very serious.”

The 78-year-old musician is impressively active for his age and still gives performances across the U.S. He has been making music sine the 1950s, receiving the moniker “The Originator” for his contribution to the evolution of rock’n’roll music.

Diddley was inducted into the prestigious Rock and Roll Hall of Fame in 1987 and received a lifetime achievement Grammy in 1998.

Diddley’s fellow inductees in the Rock and Roll Hall of Fame in 1987 were Aretha Franklin, Marvin Gaye, Roy Orbison, B. B. King and Bill Haley, among others.

Diddley, born Ellas Otha Bates, is the first African-American to appear on the famous “The Ed Sullivan Show.”