Proteases that comprise an amino acid sequence that is at least 70% identical to the amino acid sequence indicated in SEQ ID NO. 1 over its entire length and that comprise, in the count in accordance with SEQ ID NO. 1, the amino acid substitution R99D in combination with at least two further amino acid substitutions that are selected from the group consisting of S3T, V4I, and V199I, display very good cleaning performance in particular on blood-containing stains, as well as very good temperature stability.