diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index 01a57634a..a7284afaa 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -2487,8 +2487,9 @@ class Level implements ChunkManager, Metadatable{
 				if(!($chunk instanceof Chunk)){
 					throw new ChunkException("Invalid Chunk sent");
 				}
+				assert($chunk->getX() === $x and $chunk->getZ() === $z, "Chunk coordinate mismatch: expected $x $z, but chunk has coordinates " . $chunk->getX() . " " . $chunk->getZ() . ", did you forget to clone a chunk before setting?");
 
-				$this->server->getAsyncPool()->submitTask(new ChunkRequestTask($this, $chunk));
+				$this->server->getAsyncPool()->submitTask(new ChunkRequestTask($this, $x, $z, $chunk));
 
 				$this->timings->syncChunkSendPrepareTimer->stopTiming();
 			}
diff --git a/src/pocketmine/level/format/io/ChunkRequestTask.php b/src/pocketmine/level/format/io/ChunkRequestTask.php
index 3effbd0e0..834e5d61f 100644
--- a/src/pocketmine/level/format/io/ChunkRequestTask.php
+++ b/src/pocketmine/level/format/io/ChunkRequestTask.php
@@ -43,13 +43,13 @@ class ChunkRequestTask extends AsyncTask{
 
 	protected $compressionLevel;
 
-	public function __construct(Level $level, Chunk $chunk){
+	public function __construct(Level $level, int $chunkX, int $chunkZ, Chunk $chunk){
 		$this->levelId = $level->getId();
 		$this->compressionLevel = $level->getServer()->networkCompressionLevel;
 
 		$this->chunk = $chunk->fastSerialize();
-		$this->chunkX = $chunk->getX();
-		$this->chunkZ = $chunk->getZ();
+		$this->chunkX = $chunkX;
+		$this->chunkZ = $chunkZ;
 
 		//TODO: serialize tiles with chunks
 		$tiles = "";