diff --git a/src/pocketmine/block/Stone.php b/src/pocketmine/block/Stone.php
index 396cd5b3c..9958b7bcf 100644
--- a/src/pocketmine/block/Stone.php
+++ b/src/pocketmine/block/Stone.php
@@ -45,6 +45,7 @@ class Stone extends Solid{
 			self::POLISHED_DIORITE => "Polished Diorite",
 			self::ANDESITE => "Andesite",
 			self::POLISHED_ANDESITE => "Polished Andesite",
+			7 => "Unknown Stone",
 		];
 		$this->name = $names[$this->meta & 0x07];
 	}