The invention relates to a phosphate salt or a nitrate salt of 4-(R)-6,7- dihydro-5H-pyrrolo[l,2-c]imidazol-5-yl-3-fluoro-benzonitrile having following formula: especially in crystalline form, and specific forms of these salts, as well as related invention embodiments. The salts and salt forms allow for the prophylactic and/or therapeutic treatment of aldosterone synthase and/or aromatase mediated diseases or disorders such as Cushing's disease.
