diff --git a/src/Iterators/CachingIterator.php b/src/Iterators/CachingIterator.php
index e2e5e4c1a..a389e0d8a 100644
--- a/src/Iterators/CachingIterator.php
+++ b/src/Iterators/CachingIterator.php
@@ -28,8 +28,7 @@ class CachingIterator extends \CachingIterator implements \Countable
 {
 	use Nette\SmartObject;
 
-	/** @var int */
-	private $counter = 0;
+	private int $counter = 0;
 
 
 	public function __construct($iterator)
diff --git a/src/Utils/ArrayList.php b/src/Utils/ArrayList.php
index dd009036e..107b39cf0 100644
--- a/src/Utils/ArrayList.php
+++ b/src/Utils/ArrayList.php
@@ -19,8 +19,7 @@ class ArrayList implements \ArrayAccess, \Countable, \IteratorAggregate
 {
 	use Nette\SmartObject;
 
-	/** @var mixed[] */
-	private $list = [];
+	private array $list = [];
 
 
 	/**
diff --git a/src/Utils/Html.php b/src/Utils/Html.php
index 77a637ab3..e4f0493cc 100644
--- a/src/Utils/Html.php
+++ b/src/Utils/Html.php
@@ -238,10 +238,9 @@ class Html implements \ArrayAccess, \Countable, \IteratorAggregate, HtmlStringab
 	/** @var array<string, mixed>  element's attributes */
 	public $attrs = [];
 
-	/** @var bool  use XHTML syntax? */
-	public static $xhtml = false;
+	public static bool $xhtml = false;
 
-	/** @var array<string, int>  void elements */
+	/** void elements */
 	public static $emptyElements = [
 		'img' => 1, 'hr' => 1, 'br' => 1, 'input' => 1, 'meta' => 1, 'area' => 1, 'embed' => 1, 'keygen' => 1,
 		'source' => 1, 'base' => 1, 'col' => 1, 'link' => 1, 'param' => 1, 'basefont' => 1, 'frame' => 1,
@@ -251,11 +250,10 @@ class Html implements \ArrayAccess, \Countable, \IteratorAggregate, HtmlStringab
 	/** @var array<int, Html|string> nodes */
 	protected $children = [];
 
-	/** @var string  element's name */
-	private $name;
+	/** element's name */
+	private string $name = '';
 
-	/** @var bool  is element empty? */
-	private $isEmpty;
+	private bool $isEmpty = false;
 
 
 	/**
diff --git a/src/Utils/Image.php b/src/Utils/Image.php
index 75650bc03..441f6729a 100644
--- a/src/Utils/Image.php
+++ b/src/Utils/Image.php
@@ -125,8 +125,7 @@ class Image
 
 	private const FORMATS = [self::JPEG => 'jpeg', self::PNG => 'png', self::GIF => 'gif', self::WEBP => 'webp', self::BMP => 'bmp'];
 
-	/** @var resource|\GdImage */
-	private $image;
+	private \GdImage $image;
 
 
 	/**
diff --git a/src/Utils/Paginator.php b/src/Utils/Paginator.php
index 5b37ee3db..5a48a58b3 100644
--- a/src/Utils/Paginator.php
+++ b/src/Utils/Paginator.php
@@ -32,17 +32,13 @@ class Paginator
 {
 	use Nette\SmartObject;
 
-	/** @var int */
-	private $base = 1;
+	private int $base = 1;
 
-	/** @var int */
-	private $itemsPerPage = 1;
+	private int $itemsPerPage = 1;
 
-	/** @var int */
-	private $page = 1;
+	private int $page = 1;
 
-	/** @var int|null */
-	private $itemCount;
+	private ?int $itemCount = null;
 
 
 	/**
diff --git a/tests/Utils/SmartObject.arrayProperty.phpt b/tests/Utils/SmartObject.arrayProperty.phpt
index bc6f0ba1c..f935ff943 100644
--- a/tests/Utils/SmartObject.arrayProperty.phpt
+++ b/tests/Utils/SmartObject.arrayProperty.phpt
@@ -18,7 +18,7 @@ class TestClass
 {
 	use Nette\SmartObject;
 
-	private $items = [];
+	private array $items = [];
 
 
 	public function &getItems()