Contribute correction: Fibuplan

  ______   _    _                ___    
 /_   _// | || | ||     ___     / _ \\  
 `-| |,-  | || | ||    /   ||  | / \ || 
   | ||   | \\_/ ||   | [] ||  | \_/ || 
   |_||    \____//     \__ ||   \___//  
   `-`'     `---`       -|_||   `---`   
                         `-`