Rhodococcus equi infection is an uncommon infection in the immunocompetent patient. It is a common zoonotic infection, with lung being the commonest primary site of infection. This organism is commonly misidentified as contaminant as it resembles diptheroids. Once recognised, the treatment requires combination of at least two different classes of antibiotics with a prolonged duration. Here, we report a case of rhodococcus equi infective endocarditis in a serologically HIV negative patient with no exposure to farm animals, who was resistant to many common antibiotics and successfully treated with linezolid.