Abstract: The present invention is concerned with novel 1,3-dihydro-2H-benzimidazol-2-one derivatives substituted with heterocycles having formula (I) stereoisomeric forms thereof, and the pharmaceutically acceptable addition salts, and the solvates thereof, wherein R4, R5, Z and Het have the meaning defined in the claims. The compounds according to the present invention are useful as inhibitors on the replication of the respiratory syncytial virus (RSV). The invention further concerns the preparation of such novel compounds, compositions comprising these compounds, and the compounds for use in the treatment of respiratory syncytial virus infection.