diff --git a/src/pocketmine/level/format/io/leveldb/LevelDB.php b/src/pocketmine/level/format/io/leveldb/LevelDB.php
index 42d44346b..daf991771 100644
--- a/src/pocketmine/level/format/io/leveldb/LevelDB.php
+++ b/src/pocketmine/level/format/io/leveldb/LevelDB.php
@@ -242,11 +242,11 @@ class LevelDB extends BaseLevelProvider{
 	}
 
 	public function getGenerator() : string{
-		return (string) $this->levelData["generatorName"];
+		return $this->levelData->getString("generatorName", "");
 	}
 
 	public function getGeneratorOptions() : array{
-		return ["preset" => $this->levelData["generatorOptions"]];
+		return ["preset" => $this->levelData->getString("generatorOptions", "")];
 	}
 
 	public function getDifficulty() : int{