@@ -57,7 +57,7 @@ int main()
// [3.3] Draw phase
SDL_FillRect(screen, 0, SDL_MapRGB(screen->format, 0, 255, 255));
- SDL_BlitSurface(grass, 0x0, screen, 0x0);
+ SDL_BlitSurface(grass, NULL, screen, NULL);
SDL_Flip(screen);