Ncurses c++ class

Hi, I'm having a problem with the inclusion of board.h in the first code space (player.h) I've included the file but the terminal gives an error: "unknown type name Board"

#ifndef PLAYER_H
#define PLAYER_H
#define SPEED 1
#include <ncurses.h>
#include "board.h"

class Player{
public:
    Player(int y, int x, char c);
    
    void mvup();
    void mvdown();
    void mvleft();
    void mvright();
    int getmv();
    void display();
protected:
    Board board;
    int xLoc, yLoc, xM, yM;
    char character;
};
#endif

#ifndef BOARD_H
#define BOARD_H
#include <ncurses.h>
#include "game.h"

class Board{
public:
    Board();
    Board(int height, int width);

    void construct(int height, int width);
    void initialized();
    void addBorder();
    void clear();
    void refresh();
    void addAt(int y, int x, chtype ch);
    chtype getInput();
protected:
    WINDOW * playwin;
};
#endif