diff --git a/src/pocketmine/block/tile/Hopper.php b/src/pocketmine/block/tile/Hopper.php
index 496975a79..bc8018ee4 100644
--- a/src/pocketmine/block/tile/Hopper.php
+++ b/src/pocketmine/block/tile/Hopper.php
@@ -60,6 +60,15 @@ class Hopper extends Spawnable implements Container, Nameable{
 		$nbt->setInt(self::TAG_TRANSFER_COOLDOWN, $this->transferCooldown);
 	}
 
+	public function close() : void{
+		if(!$this->closed){
+			$this->inventory->removeAllViewers(true);
+			$this->inventory = null;
+
+			parent::close();
+		}
+	}
+
 	public function getDefaultName() : string{
 		return "Hopper";
 	}