KNaP 6 (PbO 3 ) 8 was predicted to be in space group P 3 with ordered vacancies that leave tunnels in the structure. The structure provided in the supplemental information of the A-lab paper 4 has a higher symmetry and the space group P 6 3 /m, although the authors incorrectly claim they synthesized the target compound in space group P 3. The structure provided in the supplemental information not only has a higher symmetry, it also places K, Na and Pb on the same crystallographic position. We found that the PXRD pattern of the synthetic product could also be indexed with a combination of the known materials (Na,K)Pb 4 (PO 4 ) 3