Your axe is fitted with a curved fawn-foot; the Faithfull axes handles are curved fawn-foot ranging from 12" to 36" in length and a wide variety of eye sizes. There's no such thing as 'the wrong shape' - it's a matter pf preference for the job being done (unless it's a double-bit of course).
You can also treat the handle as a canvass and modify it to suit your own preference.