A genome-based phylogeny of the publicly available genomes of the genus Nocardiopsis reveals that Nocardiopsis baichengensis YIM 90130T is closely related to Nocardiopsis halophila DSM 44494T. Overall genome relatedness indices between the genomes of the two species were above the threshold values necessary for defining a new species (dDDH, 82.9 %; ANIb, 97.8 %; ANIm, 98.3 %; AAI, 97.7 %). Both species showed a similar G+C content of 73.6 mol% in their genomes. Considering the high similarity between the genomes of the two species, we propose that Nocardiopsisbaichengesis Li et al. 2006 should be reclassified as a later heterotypic synonym of Nocardiopsis halophila Al-Tai and Ruan 1994.