A 44-year-old man developed endocarditis due to Curvularia lunata on a Carpentier-Edwards porcine heterograft with clinical involvement of the ring of the aortic valve and the aortic root. Because curative surgery was considered to be extremely high risk, he was treated with antifungal drugs for nearly 7 years. Initial treatment with amphotericin B and ketoconazole was followed by long-term treatment with terbinafine, an experimental allyamine derivative. No adverse effects were attributed to terbinafine. At surgery nearly 7 years later, the aortic valve ring and aortic root appeared to be uninvolved, and the valve was replaced uneventfully. To our knowledge, this is the first report of successful treatment of curvularia endocarditis.