diff --git a/src/pocketmine/level/biome/Biome.php b/src/pocketmine/level/biome/Biome.php
index 9a92c55483..09a38bcaaa 100644
--- a/src/pocketmine/level/biome/Biome.php
+++ b/src/pocketmine/level/biome/Biome.php
@@ -99,6 +99,8 @@ abstract class Biome{
 		self::register(self::SWAMP, new SwampBiome());
 		self::register(self::RIVER, new RiverBiome());
 
+		self::register(self::HELL, new HellBiome());
+
 		self::register(self::ICE_PLAINS, new IcePlainsBiome());
 
 		self::register(self::SMALL_MOUNTAINS, new SmallMountainsBiome());