In Modern Danish the reflexive element sig occurs in monotransitive constructions with a broad range of verbs, including verbs of obtaining such as købe 'buy' and verbs of perception and consumption, e.g. høre 'hear' and spise 'eat'. The paper argues that extension of monotransitive construction with sig constitutes an indirect middle construction that assigns the semantic role Afficiary (Danish Interessent) to the subject referent. The historical origin of the modern indirect middle is the indirect object, which used to have broad Afficiary meaning. The paper proposes that the indirect middle came about as a result of a semantic split in which the reflexive sig preserved the original Afficiary meaning while the non-reflexive indirect object underwent a narrowing to Recipient meaning.