--- nono/vm/keyboard.cpp	2026/04/29 17:04:28	1.1.1.1
+++ nono/vm/keyboard.cpp	2026/04/29 17:04:50	1.1.1.4
@@ -1,12 +1,12 @@
 //
 // nono
-// Copyright (C) 2018 isaki@NetBSD.org
+// Copyright (C) 2020 nono project
+// Licensed under nono-license.txt
 //
 
 #include "keyboard.h"
-#include "mystring.h"
 
-Keyboard *gKeyboard;
+std::unique_ptr<Keyboard> gKeyboard;
 
 // コンストラクタ
 Keyboard::Keyboard()