The present invention relates to 4-[3-(1,1-difluoroethyl)-5-methyl-4H-1,2,4-triazol-4-yl]-1-{(1R,3R)-3-(3,5-difluorophenyl)-1-methyl-3-[1-(methylsulfonyl)&rgr;iperidin-4-yl]propyl}piperidine formula (I): or a pharmaceutically acceptable salt thereof, as well as processes for the preparation of this compound and its use in the treatment of CCR5 disease states.