diff --git a/src/input/keyboard.c b/src/input/keyboard.c
index a4533e6..6a501ae 100644
--- a/src/input/keyboard.c
+++ b/src/input/keyboard.c
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #include "keyboard.h"
 #include "keymap.h"
 #include "../core/io.h"
diff --git a/src/input/keyboard.h b/src/input/keyboard.h
index 88a005c..41f8e8c 100644
--- a/src/input/keyboard.h
+++ b/src/input/keyboard.h
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #ifndef KEYBOARD_H
 #define KEYBOARD_H
 
diff --git a/src/input/keycodes.h b/src/input/keycodes.h
index 2969c5f..80ecd76 100644
--- a/src/input/keycodes.h
+++ b/src/input/keycodes.h
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #ifndef KEYCODES_H
 #define KEYCODES_H
 
diff --git a/src/input/keymap.c b/src/input/keymap.c
index 505c946..cf7c07b 100644
--- a/src/input/keymap.c
+++ b/src/input/keymap.c
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #include "keymap.h"
 
 #define DEAD_NORMAL       0x01
diff --git a/src/input/keymap.h b/src/input/keymap.h
index 809be99..e5bd705 100644
--- a/src/input/keymap.h
+++ b/src/input/keymap.h
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #ifndef KEYMAP_H
 #define KEYMAP_H
 
diff --git a/src/userland/cli/hexdump.c b/src/userland/cli/hexdump.c
index f722d63..dc701d3 100644
--- a/src/userland/cli/hexdump.c
+++ b/src/userland/cli/hexdump.c
@@ -1,4 +1,4 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
 // This software is released under the GNU General Public License v3.0. See LICENSE file for details.
 // This header needs to maintain in any file it is present in, as per the GPL license terms.
 // BOREDOS_APP_DESC: Display file contents in hexadecimal.
diff --git a/src/userland/cli/ps.c b/src/userland/cli/ps.c
index f34554d..0d65cb8 100644
--- a/src/userland/cli/ps.c
+++ b/src/userland/cli/ps.c
@@ -1,4 +1,4 @@
-// Copyright (c) 2023-2026 Chris (boreddevnl)
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
 // This software is released under the GNU General Public License v3.0. See LICENSE file for details.
 // This header needs to maintain in any file it is present in, as per the GPL license terms.
 // BOREDOS_APP_DESC: List running processes.
diff --git a/src/userland/games/2048.c b/src/userland/games/2048.c
index 091c723..118aa28 100644
--- a/src/userland/games/2048.c
+++ b/src/userland/games/2048.c
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 // BOREDOS_APP_DESC: 2048 number puzzle game.
 // BOREDOS_APP_ICONS: /Library/images/icons/colloid/applications-games.png
 #include "libc/syscall.h"
diff --git a/src/userland/games/snake.c b/src/userland/games/snake.c
index 69ae859..4c6e77b 100644
--- a/src/userland/games/snake.c
+++ b/src/userland/games/snake.c
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 // BOREDOS_APP_DESC: Classic snake arcade game.
 // BOREDOS_APP_ICONS: /Library/images/icons/colloid/cartridges.png
 #include "libc/syscall.h"
diff --git a/src/userland/gui/keylog.c b/src/userland/gui/keylog.c
index 851d1d5..ab4ddd7 100644
--- a/src/userland/gui/keylog.c
+++ b/src/userland/gui/keylog.c
@@ -1,16 +1,12 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #include "libc/syscall.h"
 #include "libc/libui.h"
 #include "libc/stdlib.h"
 #include <stdint.h>
 #include <stdbool.h>
 
-/*
-@Lluciocc
-The most SIMPLE keylogger for debug
-FEAT:
-- Log every key pressed in the terminal and gives their keycode
-*/
-
 #define WINDOW_W 400
 #define WINDOW_H 200
 
diff --git a/src/userland/libc/utf-8.c b/src/userland/libc/utf-8.c
index edc5af6..ad803b7 100644
--- a/src/userland/libc/utf-8.c
+++ b/src/userland/libc/utf-8.c
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #include "utf-8.h"
 
 static int utf8_write_replacement(char *out) {
diff --git a/src/userland/libc/utf-8.h b/src/userland/libc/utf-8.h
index 1af7b36..b9ee454 100644
--- a/src/userland/libc/utf-8.h
+++ b/src/userland/libc/utf-8.h
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #ifndef UTF_8_H
 #define UTF_8_H
 
diff --git a/src/wm/utf-8.h b/src/wm/utf-8.h
index 1af7b36..b9ee454 100644
--- a/src/wm/utf-8.h
+++ b/src/wm/utf-8.h
@@ -1,3 +1,6 @@
+// Copyright (c) 2026 Lluciocc (https://github.com/lluciocc)
+// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
+// This header needs to maintain in any file it is present in, as per the GPL license terms.
 #ifndef UTF_8_H
 #define UTF_8_H