diff --git a/src/pocketmine/inventory/ChestInventory.php b/src/pocketmine/inventory/ChestInventory.php
index 1dc194270..dc1de3231 100644
--- a/src/pocketmine/inventory/ChestInventory.php
+++ b/src/pocketmine/inventory/ChestInventory.php
@@ -85,8 +85,8 @@ class ChestInventory extends ContainerInventory{
 		$pk->x = (int) $vector->x;
 		$pk->y = (int) $vector->y;
 		$pk->z = (int) $vector->z;
-		$pk->case1 = 1; //it's always 1 for a chest
-		$pk->case2 = $isOpen ? 1 : 0;
+		$pk->eventType = 1; //it's always 1 for a chest
+		$pk->eventData = $isOpen ? 1 : 0;
 		$this->getHolder()->getLevel()->addChunkPacket($this->getHolder()->getX() >> 4, $this->getHolder()->getZ() >> 4, $pk);
 	}
 }
diff --git a/src/pocketmine/network/mcpe/protocol/BlockEventPacket.php b/src/pocketmine/network/mcpe/protocol/BlockEventPacket.php
index b331f21eb..576bfeaa1 100644
--- a/src/pocketmine/network/mcpe/protocol/BlockEventPacket.php
+++ b/src/pocketmine/network/mcpe/protocol/BlockEventPacket.php
@@ -38,20 +38,20 @@ class BlockEventPacket extends DataPacket{
 	/** @var int */
 	public $z;
 	/** @var int */
-	public $case1;
+	public $eventType;
 	/** @var int */
-	public $case2;
+	public $eventData;
 
 	protected function decodePayload(){
 		$this->getBlockPosition($this->x, $this->y, $this->z);
-		$this->case1 = $this->getVarInt();
-		$this->case2 = $this->getVarInt();
+		$this->eventType = $this->getVarInt();
+		$this->eventData = $this->getVarInt();
 	}
 
 	protected function encodePayload(){
 		$this->putBlockPosition($this->x, $this->y, $this->z);
-		$this->putVarInt($this->case1);
-		$this->putVarInt($this->case2);
+		$this->putVarInt($this->eventType);
+		$this->putVarInt($this->eventData);
 	}
 
 	public function handle(NetworkSession $session) : bool{