UNLABELLED: The apple ( x ) scab () resistance genes and were mapped to a similar region on the top of linkage group 2 and both resistance genes elicit the same type of resistance reaction, i.e., a hypersensitive response; hence, it is suspected that the two genes may be the same. As the two resistance genes and are currently used in apple breeding, it is important to clarify whether the two resistance genes are the same or not. Several approaches were used to make this determination. First, the pedigree of the genotype GMAL 2473, the source of , was reconstructed. GMAL 2473 was found to be an F1 of 'Russian seedling', the genotype, which is known to also be the source of . Next, it was further demonstrated that 'Regia', a cultivar known to carry (and ), carries the same gene (), which was demonstrated to be the gene inducing resistance. Finally, it was shown that transgenic lines carrying are compatible with race apple scab isolates. Taken all together, these results definitively demonstrate that and are the same resistance gene. For future studies, we suggest referring to this resistance with the first name that was assigned to this gene, namely . SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s11032-023-01421-0.