Erysipelothrix rhusiopathie is an immobile, not sporulated, gram positive bacillus. Man is an accidental host. Infection is acquired through wounds on contact with sick animals or carriers, their products or objects contaminated with their waste. We report a 40 years old tannery male worker, presenting in the emergency room with fever lasting one month. An echocardiogram showed a vegetation and perforation of the aortic valve with severe aortic regurgitation. Blood cultures gave growth to E. rhusiopathiae. The patient was treated with penicillin. After three weeks of treatment an aortic valve replacement with a mechanical valve was performed. At six weeks, he was discharged from the hospital.