diff --git a/src/pocketmine/block/Block.php b/src/pocketmine/block/Block.php
index 627a88335..ed2196a6a 100644
--- a/src/pocketmine/block/Block.php
+++ b/src/pocketmine/block/Block.php
@@ -276,7 +276,7 @@ class Block extends Position implements BlockIds, Metadatable{
 				}else{
 					self::$lightFilter[$id] = 1;
 					for($data = 0; $data < 16; ++$data){
-						self::$fullList[($id << 4) | $data] = new Block($id, $data);
+						self::$fullList[($id << 4) | $data] = new UnknownBlock($id, $data);
 					}
 				}
 			}
@@ -296,10 +296,10 @@ class Block extends Position implements BlockIds, Metadatable{
 			if($block !== null){
 				$block = new $block($meta);
 			}else{
-				$block = new Block($id, $meta);
+				$block = new UnknownBlock($id, $meta);
 			}
 		}catch(\RuntimeException $e){
-			$block = new Block($id, $meta);
+			$block = new UnknownBlock($id, $meta);
 		}
 
 		if($pos !== null){
diff --git a/src/pocketmine/block/UnknownBlock.php b/src/pocketmine/block/UnknownBlock.php
new file mode 100644
index 000000000..91ad2a512
--- /dev/null
+++ b/src/pocketmine/block/UnknownBlock.php
@@ -0,0 +1,28 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+
+namespace pocketmine\block;
+
+
+class UnknownBlock extends Flowable{
+
+}
\ No newline at end of file