The invention relates to the use of a pyrimidylaminobenzamides of formula (I) wherein the radicals have the meanings as defined herein,or of a pharmaceutically acceptable salt thereof for the manufacture of pharmaceutical compositions for use in the treatment of fibrosis, to the use of a pyrimidylaminobenzamides of formula (I) or pharmaceutically acceptable salt thereof in the treatment of fibrosis, to a method of treating warm-blooded animals including humans suffering from fibrosis by administering to a said animal in need of such treatment an effective dose of a pyrimidyl- aminobenzamide of formula I or a pharmaceutically acceptable salt thereof, and to combinationscomprising(a) at least one pyrimidylaminobenzamides of formula (I) as and (b) at least one compound selected form AT1-receptor antagonists and ACE inhibitors and the use of such combinations in the treatment of fibrosis, in particular hepatic fibrosis.