diff --git a/src/pocketmine/block/Thin.php b/src/pocketmine/block/Thin.php
index ef85431d2..41864bad3 100644
--- a/src/pocketmine/block/Thin.php
+++ b/src/pocketmine/block/Thin.php
@@ -28,10 +28,6 @@ use pocketmine\math\Vector3;
 
 abstract class Thin extends Transparent{
 
-	public function isSolid() : bool{
-		return false;
-	}
-
 	protected function recalculateBoundingBox() : ?AxisAlignedBB{
 
 		$minX = 0.4375;