The present invention relates to the use of pyrido[2,3-d]pyrimidines of formula (I) wherein L, R1, R2 and R3 have specific meaning. The present invention also relates to the use of the compounds of formula (I) as inhibitors of HCV replication as well as their use in pharmaceutical compositions aimed to treat or combat HCV infections. In addition, the present invention relates to compounds of formula (I) per se and their use as medicines. The present invention also concerns processes for the preparation of such compounds, pharmaceutical compositions comprising them, and combinations of said compounds with other anti-HCV agents.