diff --git a/src/pocketmine/block/Block.php b/src/pocketmine/block/Block.php
index 20c8aa624..91c4c7fec 100644
--- a/src/pocketmine/block/Block.php
+++ b/src/pocketmine/block/Block.php
@@ -653,7 +653,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	}
 
 	/**
-	 * @return AxisAlignedBB
+	 * @return AxisAlignedBB|null
 	 */
 	public function getBoundingBox(){
 		if($this->boundingBox === null){
@@ -663,7 +663,7 @@ class Block extends Position implements BlockIds, Metadatable{
 	}
 
 	/**
-	 * @return AxisAlignedBB
+	 * @return AxisAlignedBB|null
 	 */
 	protected function recalculateBoundingBox(){
 		return new AxisAlignedBB(