diff --git a/src/pocketmine/network/mcpe/protocol/types/EntityLink.php b/src/pocketmine/network/mcpe/protocol/types/EntityLink.php
index 30c5ff42e..9a220fab1 100644
--- a/src/pocketmine/network/mcpe/protocol/types/EntityLink.php
+++ b/src/pocketmine/network/mcpe/protocol/types/EntityLink.php
@@ -25,6 +25,10 @@ namespace pocketmine\network\mcpe\protocol\types;
 
 class EntityLink{
 
+	public const TYPE_REMOVE = 0;
+	public const TYPE_RIDER = 1;
+	public const TYPE_PASSENGER = 2;
+
 	/** @var int */
 	public $fromEntityUniqueId;
 	/** @var int */