diff --git a/src/pocketmine/level/generator/object/Tree.php b/src/pocketmine/level/generator/object/Tree.php
index 27b810729..ec2e74acd 100644
--- a/src/pocketmine/level/generator/object/Tree.php
+++ b/src/pocketmine/level/generator/object/Tree.php
@@ -33,10 +33,8 @@ abstract class Tree{
 	public $overridable = [
 		Block::AIR => true,
 		Block::SAPLING => true,
-		Block::LOG => true,
 		Block::LEAVES => true,
 		Block::SNOW_LAYER => true,
-		Block::LOG2 => true,
 		Block::LEAVES2 => true
 	];