diff --git a/HttpServer/Events/OnPacket.php b/HttpServer/Events/OnPacket.php
index b109cf6a..d17362a9 100644
--- a/HttpServer/Events/OnPacket.php
+++ b/HttpServer/Events/OnPacket.php
@@ -20,12 +20,12 @@ class OnPacket extends Callback
 {
 
 
-	/** @var Closure */
-	public Closure $unpack;
+	/** @var ?Closure */
+	public ?Closure $unpack = null;
 
 
-	/** @var Closure */
-	public Closure $pack;
+	/** @var ?Closure */
+	public ?Closure $pack = null;
 
 
 	/**
diff --git a/HttpServer/Events/OnReceive.php b/HttpServer/Events/OnReceive.php
index 4c83125c..0da9acc0 100644
--- a/HttpServer/Events/OnReceive.php
+++ b/HttpServer/Events/OnReceive.php
@@ -20,12 +20,12 @@ class OnReceive extends Callback
 {
 
 
-	/** @var Closure */
-	public Closure $unpack;
+	/** @var ?Closure */
+	public ?Closure $unpack = null;
 
 
-	/** @var Closure */
-	public Closure $pack;
+	/** @var ?Closure */
+	public ?Closure $pack = null;
 
 
 	/**