Reply to the Comment on the application of basis set superposition error to ab initio calculation of water dimer, Abstract: This reply is to a comment on our paper finding low-energy trifurcated water dimers, arguing that our finding is spurious due to the lack of basis-set superposition error (BSSE) correction. Our reply cites several papers showing that the usual way to correct for the BSSE is quite often unreliable. We also show that the also neglected zero-point vibration energy correction would act in the opposite direction, providing further support to the conclusions of our original paper.