diff --git a/src/pocketmine/level/utils/SubChunkIteratorManager.php b/src/pocketmine/level/utils/SubChunkIteratorManager.php
index 2d61f2bf2..62bcf2dfc 100644
--- a/src/pocketmine/level/utils/SubChunkIteratorManager.php
+++ b/src/pocketmine/level/utils/SubChunkIteratorManager.php
@@ -75,4 +75,8 @@ class SubChunkIteratorManager{
 		return true;
 	}
 
+	public function invalidate() : void{
+		$this->currentChunk = null;
+		$this->currentSubChunk = null;
+	}
 }