diff --git a/.php-cs-fixer.dist.php b/.php-cs-fixer.dist.php
index f2f0b44..4bc58a9 100644
--- a/.php-cs-fixer.dist.php
+++ b/.php-cs-fixer.dist.php
@@ -2,14 +2,17 @@
 
 use PhpCsFixer\Config;
 
+$header = file_exists(__DIR__.'/header.txt') ? file_get_contents(__DIR__.'/header.txt') : '';
 $finder = PhpCsFixer\Finder::create()
     ->in(__DIR__ . '/src')
     ->in(__DIR__ . '/tests')
 ;
 return (new Config())
+
     ->setRules([
         '@Symfony' => true,
         'array_syntax' => ['syntax' => 'short'],
+        'header_comment' => ['header' => $header],
     ])
     ->setFinder($finder)
 ;
diff --git a/functions.php b/functions.php
index f75f3a5..3cd0f6c 100644
--- a/functions.php
+++ b/functions.php
@@ -3,7 +3,7 @@
 declare(strict_types=1);
 
 /*
- * Copyright (c) 2020  https://rewiv.com sikofitt@gmail.com
+ * Copyright (c) 2020-2024  https://sikofitt.com sikofitt@gmail.com
  *
  * This Source Code Form is subject to the
  * terms of the Mozilla Public License, v. 2.0.
diff --git a/header.txt b/header.txt
index a30ee42..3aedd39 100644
--- a/header.txt
+++ b/header.txt
@@ -1,4 +1,4 @@
-Copyright (c) 2020  https://rewiv.com sikofitt@gmail.com
+Copyright (c) 2020-2024  https://sikofitt.com sikofitt@gmail.com
 
 This Source Code Form is subject to the 
 terms of the Mozilla Public License, v. 2.0. 
diff --git a/src/Console/Getch.php b/src/Console/Getch.php
index 2ede5ae..e10947f 100644
--- a/src/Console/Getch.php
+++ b/src/Console/Getch.php
@@ -3,7 +3,7 @@
 declare(strict_types=1);
 
 /*
- * Copyright (c) 2020  https://rewiv.com sikofitt@gmail.com
+ * Copyright (c) 2020-2024  https://sikofitt.com sikofitt@gmail.com
  *
  * This Source Code Form is subject to the
  * terms of the Mozilla Public License, v. 2.0.
@@ -14,8 +14,6 @@ declare(strict_types=1);
 
 namespace Sikofitt\Console;
 
-use FFI;
-
 final class Getch
 {
     // Special key codes
@@ -24,7 +22,7 @@ final class Getch
     public const KEY_E0 = 0;
     public const KEY_E1 = 224;
 
-    // Supported scan scodes.
+    // Supported scan codes.
     public const KEY_F1 = 59;
     public const KEY_F2 = 60;
     public const KEY_F3 = 61;
@@ -55,7 +53,7 @@ final class Getch
         int _ungetch(int c);
     DECLARATIONS;
 
-    private static ?FFI $ffi = null;
+    private static ?\FFI $ffi = null;
 
     public static function resetFFI(): void
     {
@@ -72,13 +70,13 @@ final class Getch
             $osFamily = PHP_OS_FAMILY;
             if ('Windows' === $osFamily) {
                 $declarations = self::DECLARATIONS.' int _kbhit();';
-                self::$ffi = FFI::cdef($declarations, self::WINDOWS_LIBRARY);
+                self::$ffi = \FFI::cdef($declarations, self::WINDOWS_LIBRARY);
             } elseif ('Linux' === $osFamily) {
                 if (!file_exists($linuxLibrary)) {
                     throw new \RuntimeException(sprintf('Could not find library file %s.', $linuxLibrary));
                 }
                 $declarations = self::DECLARATIONS.' int cinPeek();';
-                self::$ffi = FFI::cdef($declarations, $linuxLibrary);
+                self::$ffi = \FFI::cdef($declarations, $linuxLibrary);
             } else {
                 throw new \RuntimeException(sprintf('Sorry, %s is not supported yet.', $osFamily));
             }
@@ -108,7 +106,6 @@ final class Getch
 
     public function ungetch(string|int $char): int
     {
-
         if (is_string($char)) {
             $char = ord($char[0]);
         }
diff --git a/tests/Getch/GetchTest.php b/tests/Getch/GetchTest.php
index ad293fa..36fdd65 100644
--- a/tests/Getch/GetchTest.php
+++ b/tests/Getch/GetchTest.php
@@ -1,5 +1,15 @@
 <?php
 
+/*
+ * Copyright (c) 2020-2024  https://sikofitt.com sikofitt@gmail.com
+ *
+ * This Source Code Form is subject to the
+ * terms of the Mozilla Public License, v. 2.0.
+ *
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
 namespace Sikofitt\Tests\Console\Getch;
 
 use PHPUnit\Framework\TestCase;
diff --git a/tests/Ungetch/UngetchTest.php b/tests/Ungetch/UngetchTest.php
index e495257..53a50e9 100644
--- a/tests/Ungetch/UngetchTest.php
+++ b/tests/Ungetch/UngetchTest.php
@@ -1,5 +1,15 @@
 <?php
 
+/*
+ * Copyright (c) 2020-2024  https://sikofitt.com sikofitt@gmail.com
+ *
+ * This Source Code Form is subject to the
+ * terms of the Mozilla Public License, v. 2.0.
+ *
+ * If a copy of the MPL was not distributed with this file,
+ * You can obtain one at https://mozilla.org/MPL/2.0/.
+ */
+
 namespace Sikofitt\Tests\Console\Ungetch;
 
 use PHPUnit\Framework\TestCase;