The present invention relates to a pharmaceutical composition comprising a) a therapeutically effective amount of a compound of formula (I), or a pharmaceutically acceptable salt thereof, b) one or more, e.g. 1, 2 or 3, surfactants with lubricant properties; c) one or more, e.g. 1, 2 or 3, dry binders with disintegrant properties; d) one or more, e.g. 1, 2 or 3, fillers, and e) one or more, e.g. 1, 2 or 3, disintegrants.