Two autoantibiotics produced by the fungus Candida albicans have been identified, with the aid of mass spectrometry, as 2-phenylethanol and 3-beta-hydroxyethylindole. The cyclodipeptides, cyclo(proline-leucine) and cyclo(proline-phenylalanine) were also isolated from cultures of Candida albicans, but did not inhibit the growth of the fungus.