diff --git a/src/pocketmine/block/NoteBlock.php b/src/pocketmine/block/NoteBlock.php
index 113d6accf..c471b8185 100644
--- a/src/pocketmine/block/NoteBlock.php
+++ b/src/pocketmine/block/NoteBlock.php
@@ -36,4 +36,6 @@ class NoteBlock extends Solid{
 	public function getToolType() : int{
 		return BlockToolType::TYPE_AXE;
 	}
+
+	//TODO
 }