The prokaryotic species name Bacillus pallidus Zhou et al. 2008 is illegitimate because it is a later homonym of the name Bacillus pallidus Scholz et al. 1988 (Bacteria, Firmicutes, Bacillales, Bacillaceae, Bacillus). Although Bacillus pallidus Scholz et al. 1988 was transferred to the genus Geobacillus as Geobacillus pallidus comb. nov. in 2004, the species name Bacillus pallidus Scholz et al. 1988 remains validly published and has priority at that position [Principle 8 of the Bacteriological Code (1990 Revision)]. In order to solve this problem, a new name was sought for this taxon, represented by the type strain CW 7T. In addition, the placement of this species in the genus Bacillus was reassessed. The data collected were re-examined as part of a taxonomic study using a polyphasic approach. It was concluded, primarily based on the chemotaxonomic data, that strain CW 7T did not belong to the genus Bacillus, but should be placed in a new genus, for which the name Falsibacillus gen. nov. is proposed. The genus currently comprises a single species, Falsibacillus pallidus comb. nov. represented by the type strain CW 7T (=KCTC 13200T=CCTCC AB 207188T=LMG 24451T).