There is key bind. I can't recall the category now but it was named something like "user interface accept" or so. Look through your key bind settings and search for where the numpad enter is defined, and put something else there. I remember in the same category, by default many other numbed keys were assigned as well, apparently to emulate crossbutton moving in the interface by controller. If you haven't found it yet when I get to my game later today, I'll give more specific instructions after checking it.