diff --git a/src/pocketmine/network/protocol/InteractPacket.php b/src/pocketmine/network/protocol/InteractPacket.php
index 9bb039d45..252aa0e2e 100644
--- a/src/pocketmine/network/protocol/InteractPacket.php
+++ b/src/pocketmine/network/protocol/InteractPacket.php
@@ -29,6 +29,7 @@ class InteractPacket extends DataPacket{
 
 	const ACTION_LEFT_CLICK = 1;
 	const ACTION_RIGHT_CLICK = 2;
+	const ACTION_JUMP = 3;
 
 	public $action;
 	public $eid;