diff --git a/src/Bridges/HttpDI/HttpExtension.php b/src/Bridges/HttpDI/HttpExtension.php
index 9e496451..07f19c33 100644
--- a/src/Bridges/HttpDI/HttpExtension.php
+++ b/src/Bridges/HttpDI/HttpExtension.php
@@ -18,12 +18,9 @@
  */
 class HttpExtension extends Nette\DI\CompilerExtension
 {
-	private bool $cliMode;
-
-
-	public function __construct(bool $cliMode = false)
-	{
-		$this->cliMode = $cliMode;
+	public function __construct(
+		private readonly bool $cliMode = false,
+	) {
 	}
 
 
diff --git a/src/Bridges/HttpDI/SessionExtension.php b/src/Bridges/HttpDI/SessionExtension.php
index c752533d..c81a34a3 100644
--- a/src/Bridges/HttpDI/SessionExtension.php
+++ b/src/Bridges/HttpDI/SessionExtension.php
@@ -19,14 +19,10 @@
  */
 class SessionExtension extends Nette\DI\CompilerExtension
 {
-	private bool $debugMode;
-	private bool $cliMode;
-
-
-	public function __construct(bool $debugMode = false, bool $cliMode = false)
-	{
-		$this->debugMode = $debugMode;
-		$this->cliMode = $cliMode;
+	public function __construct(
+		private readonly bool $debugMode = false,
+		private readonly bool $cliMode = false,
+	) {
 	}
 
 
diff --git a/src/Http/Context.php b/src/Http/Context.php
index fdbc27a5..a095c203 100644
--- a/src/Http/Context.php
+++ b/src/Http/Context.php
@@ -15,14 +15,10 @@
  */
 class Context
 {
-	private IRequest $request;
-	private IResponse $response;
-
-
-	public function __construct(IRequest $request, IResponse $response)
-	{
-		$this->request = $request;
-		$this->response = $response;
+	public function __construct(
+		private readonly IRequest $request,
+		private readonly IResponse $response,
+	) {
 	}
 
 
diff --git a/src/Http/FileUpload.php b/src/Http/FileUpload.php
index 9f5fa92c..5599639d 100644
--- a/src/Http/FileUpload.php
+++ b/src/Http/FileUpload.php
@@ -33,13 +33,13 @@ final class FileUpload
 	/** @deprecated */
 	public const IMAGE_MIME_TYPES = ['image/gif', 'image/png', 'image/jpeg', 'image/webp'];
 
-	private string $name;
-	private string|null $fullPath;
+	private readonly string $name;
+	private readonly string|null $fullPath;
 	private string|false|null $type = null;
 	private string|false|null $extension = null;
-	private int $size;
+	private readonly int $size;
 	private string $tmpName;
-	private int $error;
+	private readonly int $error;
 
 
 	public function __construct(?array $value)
diff --git a/src/Http/Request.php b/src/Http/Request.php
index 553db3d1..6675fe4a 100644
--- a/src/Http/Request.php
+++ b/src/Http/Request.php
@@ -33,25 +33,26 @@ class Request implements IRequest
 {
 	use Nette\SmartObject;
 
-	private array $headers;
+	private readonly array $headers;
 
-	/** @var ?callable */
-	private $rawBodyCallback;
+	private readonly ?\Closure $rawBodyCallback;
 
 
 	public function __construct(
 		private UrlScript $url,
-		private array $post = [],
-		private array $files = [],
-		private array $cookies = [],
+		private readonly array $post = [],
+		private readonly array $files = [],
+		private readonly array $cookies = [],
 		array $headers = [],
-		private string $method = 'GET',
-		private ?string $remoteAddress = null,
+		private readonly string $method = 'GET',
+		private readonly ?string $remoteAddress = null,
 		private ?string $remoteHost = null,
 		?callable $rawBodyCallback = null,
 	) {
 		$this->headers = array_change_key_case($headers, CASE_LOWER);
-		$this->rawBodyCallback = $rawBodyCallback;
+		$this->rawBodyCallback = $rawBodyCallback
+			? \Closure::fromCallable($rawBodyCallback)
+			: null;
 	}
 
 
diff --git a/src/Http/Session.php b/src/Http/Session.php
index 539e8330..81b69029 100644
--- a/src/Http/Session.php
+++ b/src/Http/Session.php
@@ -45,8 +45,8 @@ class Session
 		'gc_maxlifetime' => self::DefaultFileLifetime, // 3 hours
 	];
 
-	private IRequest $request;
-	private IResponse $response;
+	private readonly IRequest $request;
+	private readonly IResponse $response;
 	private ?\SessionHandlerInterface $handler = null;
 	private bool $readAndClose = false;
 	private bool $fileExists = true;
diff --git a/src/Http/SessionSection.php b/src/Http/SessionSection.php
index 1bce6fd3..f79b3025 100644
--- a/src/Http/SessionSection.php
+++ b/src/Http/SessionSection.php
@@ -18,17 +18,15 @@
 class SessionSection implements \IteratorAggregate, \ArrayAccess
 {
 	public bool $warnOnUndefined = false;
-	private Session $session;
-	private string $name;
 
 
 	/**
 	 * Do not call directly. Use Session::getSection().
 	 */
-	public function __construct(Session $session, string $name)
-	{
-		$this->session = $session;
-		$this->name = $name;
+	public function __construct(
+		private readonly Session $session,
+		private readonly string $name,
+	) {
 	}
 
 
diff --git a/src/Http/UserStorage.php b/src/Http/UserStorage.php
index a557601a..bbcebfb8 100644
--- a/src/Http/UserStorage.php
+++ b/src/Http/UserStorage.php
@@ -21,13 +21,13 @@ class UserStorage implements Nette\Security\IUserStorage
 	use Nette\SmartObject;
 
 	private string $namespace = '';
-	private Session $sessionHandler;
+
 	private SessionSection $sessionSection;
 
 
-	public function __construct(Session $sessionHandler)
-	{
-		$this->sessionHandler = $sessionHandler;
+	public function __construct(
+		private readonly Session $sessionHandler,
+	) {
 	}
 
 
diff --git a/tests/Http/FileUpload.getSanitizedName.phpt b/tests/Http/FileUpload.getSanitizedName.phpt
index 0b0c6cce..aa35fe27 100644
--- a/tests/Http/FileUpload.getSanitizedName.phpt
+++ b/tests/Http/FileUpload.getSanitizedName.phpt
@@ -12,54 +12,32 @@ use Tester\Assert;
 require __DIR__ . '/../bootstrap.php';
 
 
-Assert::with(new FileUpload([]), function () {
-	$this->name = '';
-	Assert::same('unknown', $this->getSanitizedName());
-
-	$this->name = '--';
-	Assert::same('unknown', $this->getSanitizedName());
-
-	$this->name = 'foo';
-	Assert::same('foo', $this->getSanitizedName());
-
-	$this->name = '.foo.';
-	Assert::same('foo', $this->getSanitizedName());
-
-	$this->name = 'readme.txt';
-	Assert::same('readme.txt', $this->getSanitizedName());
-
-	$this->name = './.image.png';
-	Assert::same('image.png', $this->getSanitizedName());
-
-	$this->name = '../.image.png';
-	Assert::same('image.png', $this->getSanitizedName());
-
-	$this->name = '..\.image.png\\';
-	Assert::same('image.png', $this->getSanitizedName());
-
-	$this->name = '10+.+20.pdf';
-	Assert::same('10.20.pdf', $this->getSanitizedName());
+function getSanitizedName(string $name, ?string $ext = null): string
+{
+	$file = new FileUpload(['name' => $name, 'size' => 0, 'tmp_name' => '', 'error' => UPLOAD_ERR_NO_FILE]);
+	Assert::with($file, fn() => $file->extension = $ext);
+	return $file->getSanitizedName();
+}
+
+
+test('name', function () {
+	Assert::same('unknown', getSanitizedName(''));
+	Assert::same('unknown', getSanitizedName('--'));
+	Assert::same('foo', getSanitizedName('foo'));
+	Assert::same('foo', getSanitizedName('.foo.'));
+	Assert::same('readme.txt', getSanitizedName('readme.txt'));
+	Assert::same('image.png', getSanitizedName('./.image.png'));
+	Assert::same('image.png', getSanitizedName('../.image.png'));
+	Assert::same('image.png', getSanitizedName('..\.image.png\\'));
+	Assert::same('10.20.pdf', getSanitizedName('10+.+20.pdf'));
 });
 
 
-Assert::with(new FileUpload([]), function () {
-	$this->extension = 'jpeg';
-
-	$this->name = '';
-	Assert::same('unknown.jpeg', $this->getSanitizedName());
-
-	$this->name = '--';
-	Assert::same('unknown.jpeg', $this->getSanitizedName());
-
-	$this->name = 'foo';
-	Assert::same('foo.jpeg', $this->getSanitizedName());
-
-	$this->name = 'foo.jpg';
-	Assert::same('foo.jpeg', $this->getSanitizedName());
-
-	$this->name = 'foo.php';
-	Assert::same('foo.jpeg', $this->getSanitizedName());
-
-	$this->name = './.image.png';
-	Assert::same('image.jpeg', $this->getSanitizedName());
+test('name & extension', function () {
+	Assert::same('unknown.jpeg', getSanitizedName('', 'jpeg'));
+	Assert::same('unknown.jpeg', getSanitizedName('--', 'jpeg'));
+	Assert::same('foo.jpeg', getSanitizedName('foo', 'jpeg'));
+	Assert::same('foo.jpeg', getSanitizedName('foo.jpg', 'jpeg'));
+	Assert::same('foo.jpeg', getSanitizedName('foo.php', 'jpeg'));
+	Assert::same('image.jpeg', getSanitizedName('./.image.png', 'jpeg'));
 });