Way to remove visitor pattern redundancy?

So I'm playing around with the visitor pattern for the first time, and wonder why I have to write the accept function multiple times for each derived class.

class object
{
    public:
        void accept(visitor *v) { v->visit(this); }

....

class derived : object
{
    public:
        void accept(visitor *v) {.... // redundancy in my eyes!!

Do I really have to define that accept function for every single visitable? Is there a way to just write it once in the base class and have this refer to the particular derived class pointer without having to cast?

Thanks