diff --git a/src/pocketmine/block/Door.php b/src/pocketmine/block/Door.php
index 10ac4c83c..70f0bdcf8 100644
--- a/src/pocketmine/block/Door.php
+++ b/src/pocketmine/block/Door.php
@@ -104,7 +104,7 @@ abstract class Door extends Transparent{
 				$this->getLevel()->setBlock($down, Block::get($this->id, $meta), true, false, true);
 				$players = $this->getLevel()->getUsingChunk($this->x >> 4, $this->z >> 4);
 				if($player instanceof Player){
-					unset($players[$player->CID]);
+					unset($players[$player->getID()]);
 				}
 				$pk = new LevelEventPacket;
 				$pk->x = $this->x;
@@ -123,7 +123,7 @@ abstract class Door extends Transparent{
 			$this->getLevel()->setBlock($this, $this, true, false, true);
 			$players = $this->getLevel()->getUsingChunk($this->x >> 4, $this->z >> 4);
 			if($player instanceof Player){
-				unset($players[$player->CID]);
+				unset($players[$player->getID()]);
 			}
 			$pk = new LevelEventPacket;
 			$pk->x = $this->x;
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index b130ece02..c863cdec2 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -857,10 +857,10 @@ abstract class Entity extends Position implements Metadatable{
 			if(!$this->justCreated){
 				$newChunk = $this->getLevel()->getUsingChunk($this->x >> 4, $this->z >> 4);
 				foreach($this->hasSpawned as $player){
-					if(!isset($newChunk[$player->CID])){
+					if(!isset($newChunk[$player->getID()])){
 						$this->despawnFrom($player);
 					}else{
-						unset($newChunk[$player->CID]);
+						unset($newChunk[$player->getID()]);
 					}
 				}
 				foreach($newChunk as $player){