diff --git a/src/pocketmine/Thread.php b/src/pocketmine/Thread.php
index a3d7f41be9..347ec62bcd 100644
--- a/src/pocketmine/Thread.php
+++ b/src/pocketmine/Thread.php
@@ -28,7 +28,7 @@ namespace pocketmine;
  */
 abstract class Thread extends \Thread{
 
-	/** @var \ClassLoader */
+	/** @var \ClassLoader|null */
 	protected $classLoader;
 	/** @var string|null */
 	protected $composerAutoloaderPath;
diff --git a/src/pocketmine/Worker.php b/src/pocketmine/Worker.php
index fffa93248d..f4018ea48f 100644
--- a/src/pocketmine/Worker.php
+++ b/src/pocketmine/Worker.php
@@ -28,7 +28,7 @@ namespace pocketmine;
  */
 abstract class Worker extends \Worker{
 
-	/** @var \ClassLoader */
+	/** @var \ClassLoader|null */
 	protected $classLoader;
 	/** @var string|null */
 	protected $composerAutoloaderPath;
diff --git a/src/pocketmine/network/query/QueryHandler.php b/src/pocketmine/network/query/QueryHandler.php
index feb7928c06..0b620f81cd 100644
--- a/src/pocketmine/network/query/QueryHandler.php
+++ b/src/pocketmine/network/query/QueryHandler.php
@@ -40,7 +40,18 @@ use function strlen;
 use function substr;
 
 class QueryHandler{
-	private $server, $lastToken, $token, $longData, $shortData, $timeout;
+	/** @var Server */
+	private $server;
+	/** @var string */
+	private $lastToken;
+	/** @var string */
+	private $token;
+	/** @var string */
+	private $longData;
+	/** @var string */
+	private $shortData;
+	/** @var float */
+	private $timeout;
 
 	public const HANDSHAKE = 9;
 	public const STATISTICS = 0;
diff --git a/src/pocketmine/utils/Color.php b/src/pocketmine/utils/Color.php
index 19289f7d8a..018b60ac93 100644
--- a/src/pocketmine/utils/Color.php
+++ b/src/pocketmine/utils/Color.php
@@ -30,7 +30,13 @@ use function count;
 class Color{
 
 	/** @var int */
-	protected $a, $r, $g, $b;
+	protected $a;
+	/** @var int */
+	protected $r;
+	/** @var int */
+	protected $g;
+	/** @var int */
+	protected $b;
 
 	public function __construct(int $r, int $g, int $b, int $a = 0xff){
 		$this->r = $r & 0xff;