diff --git a/src/pocketmine/level/format/io/BaseLevelProvider.php b/src/pocketmine/level/format/io/BaseLevelProvider.php
index 6c29574b37..e74038d252 100644
--- a/src/pocketmine/level/format/io/BaseLevelProvider.php
+++ b/src/pocketmine/level/format/io/BaseLevelProvider.php
@@ -43,36 +43,6 @@ abstract class BaseLevelProvider implements LevelProvider{
 
 	abstract protected function loadLevelData() : LevelData;
 
-	/**
-	 * Hack to fix worlds broken previously by older versions of PocketMine-MP which incorrectly saved classpaths of
-	 * generators into level.dat on imported (not generated) worlds.
-	 *
-	 * This should only have affected leveldb worlds as far as I know, because PC format worlds include the
-	 * generatorName tag by default. However, MCPE leveldb ones didn't, and so they would get filled in with something
-	 * broken.
-	 *
-	 * This bug took a long time to get found because previously the generator manager would just return the default
-	 * generator silently on failure to identify the correct generator, which caused lots of unexpected bugs.
-	 *
-	 * Only classnames which were written into the level.dat from "fixing" the level data are included here. These are
-	 * hardcoded to avoid problems fixing broken worlds in the future if these classes get moved, renamed or removed.
-	 *
-	 * @param string $className Classname saved in level.dat
-	 *
-	 * @return null|string Name of the correct generator to replace the broken value
-	 */
-	public static function hackyFixForGeneratorClasspathInLevelDat(string $className) : ?string{
-		//THESE ARE DELIBERATELY HARDCODED, DO NOT CHANGE!
-		switch($className){
-			case 'pocketmine\level\generator\normal\Normal':
-				return "normal";
-			case 'pocketmine\level\generator\Flat':
-				return "flat";
-		}
-
-		return null;
-	}
-
 	public function getPath() : string{
 		return $this->path;
 	}
diff --git a/src/pocketmine/level/format/io/data/BaseNbtLevelData.php b/src/pocketmine/level/format/io/data/BaseNbtLevelData.php
index d2ae70385c..5c8c6a6997 100644
--- a/src/pocketmine/level/format/io/data/BaseNbtLevelData.php
+++ b/src/pocketmine/level/format/io/data/BaseNbtLevelData.php
@@ -54,8 +54,39 @@ abstract class BaseNbtLevelData implements LevelData{
 	 */
 	abstract protected function load() : ?CompoundTag;
 
+
 	abstract protected function fix() : void;
 
+	/**
+	 * Hack to fix worlds broken previously by older versions of PocketMine-MP which incorrectly saved classpaths of
+	 * generators into level.dat on imported (not generated) worlds.
+	 *
+	 * This should only have affected leveldb worlds as far as I know, because PC format worlds include the
+	 * generatorName tag by default. However, MCPE leveldb ones didn't, and so they would get filled in with something
+	 * broken.
+	 *
+	 * This bug took a long time to get found because previously the generator manager would just return the default
+	 * generator silently on failure to identify the correct generator, which caused lots of unexpected bugs.
+	 *
+	 * Only classnames which were written into the level.dat from "fixing" the level data are included here. These are
+	 * hardcoded to avoid problems fixing broken worlds in the future if these classes get moved, renamed or removed.
+	 *
+	 * @param string $className Classname saved in level.dat
+	 *
+	 * @return null|string Name of the correct generator to replace the broken value
+	 */
+	protected static function hackyFixForGeneratorClasspathInLevelDat(string $className) : ?string{
+		//THESE ARE DELIBERATELY HARDCODED, DO NOT CHANGE!
+		switch($className){
+			case 'pocketmine\level\generator\normal\Normal':
+				return "normal";
+			case 'pocketmine\level\generator\Flat':
+				return "flat";
+		}
+
+		return null;
+	}
+
 	public function getCompoundTag() : CompoundTag{
 		return $this->compoundTag;
 	}
diff --git a/src/pocketmine/level/format/io/data/BedrockLevelData.php b/src/pocketmine/level/format/io/data/BedrockLevelData.php
index 6fcf8c19fa..dcc98ffceb 100644
--- a/src/pocketmine/level/format/io/data/BedrockLevelData.php
+++ b/src/pocketmine/level/format/io/data/BedrockLevelData.php
@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\level\format\io\data;
 
-use pocketmine\level\format\io\BaseLevelProvider;
 use pocketmine\level\generator\Flat;
 use pocketmine\level\generator\GeneratorManager;
 use pocketmine\level\Level;
@@ -133,7 +132,7 @@ class BedrockLevelData extends BaseNbtLevelData{
 			}else{
 				$this->compoundTag->setString("generatorName", "default");
 			}
-		}elseif(($generatorName = BaseLevelProvider::hackyFixForGeneratorClasspathInLevelDat($this->compoundTag->getString("generatorName"))) !== null){
+		}elseif(($generatorName = self::hackyFixForGeneratorClasspathInLevelDat($this->compoundTag->getString("generatorName"))) !== null){
 			$this->compoundTag->setString("generatorName", $generatorName);
 		}
 
diff --git a/src/pocketmine/level/format/io/data/JavaLevelData.php b/src/pocketmine/level/format/io/data/JavaLevelData.php
index 8580c6478f..a8ecf9beb3 100644
--- a/src/pocketmine/level/format/io/data/JavaLevelData.php
+++ b/src/pocketmine/level/format/io/data/JavaLevelData.php
@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\level\format\io\data;
 
-use pocketmine\level\format\io\BaseLevelProvider;
 use pocketmine\level\generator\GeneratorManager;
 use pocketmine\level\Level;
 use pocketmine\nbt\BigEndianNBTStream;
@@ -77,7 +76,7 @@ class JavaLevelData extends BaseNbtLevelData{
 	protected function fix() : void{
 		if(!$this->compoundTag->hasTag("generatorName", StringTag::class)){
 			$this->compoundTag->setString("generatorName", "default", true);
-		}elseif(($generatorName = BaseLevelProvider::hackyFixForGeneratorClasspathInLevelDat($this->compoundTag->getString("generatorName"))) !== null){
+		}elseif(($generatorName = self::hackyFixForGeneratorClasspathInLevelDat($this->compoundTag->getString("generatorName"))) !== null){
 			$this->compoundTag->setString("generatorName", $generatorName);
 		}