Thread: Class functions can't use const =/

For a project due tonight ;-p. The project is done, everything works, but I was going back through the code and saw a few of my node class functions don't accept const input when they should be (for good programming, right?). So I added a few consts in, and I'm getting an error that confuzes me (dealing with converting a const to a non-const). I can't see what needs changed for it to work.

Relevant code:

Code:

void setLR(const Node<T> *l, const Node<T> *r) { setLeft(l); setRight(r); }
void setLeft(const Node<T> *l) { left = l; }  //the error is on this line
void setRight(const Node<T> *r) { right = r; }

Error:

Code:

error C2440: '=' : cannot convert from 'const Node<T> *' to 'Node<T> *'
        with
        [
            T=tool
        ]
        and
        [
            T=tool
        ]
        Conversion loses qualifiers

The node class is templated and for the project I'm using, I have a small tool class I use it with. Any ideas what the problem is?