Bossi Scherzo in F

[Bevington]

Does anyone play the M E Bossi Scherzo in F? (op 49, nr 1). I am interested in the notation about four pages from the end (just before the opening theme returns) where there is a single ascending line of notes in the treble clef. My copy has the final three or so bars ending with alternating b flat / g sharp, but this does not "sit well with my ears". It simply sounds odd . . . (I use a Bardon edition - it's the bottom of p 10). Any suggestions?