diff --git a/src/world/generator/PopulationTask.php b/src/world/generator/PopulationTask.php
index f4f3df3ac..a35197084 100644
--- a/src/world/generator/PopulationTask.php
+++ b/src/world/generator/PopulationTask.php
@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\world\generator;
 
-use pocketmine\block\BlockFactory;
 use pocketmine\scheduler\AsyncTask;
 use pocketmine\world\format\Chunk;
 use pocketmine\world\format\io\FastChunkSerializer;
@@ -118,11 +117,6 @@ class PopulationTask extends AsyncTask{
 		$chunk = $manager->getChunk($chunk->getX(), $chunk->getZ());
 		$chunk->setPopulated();
 
-		$blockFactory = BlockFactory::getInstance();
-		$chunk->recalculateHeightMap($blockFactory->blocksDirectSkyLight);
-		$chunk->populateSkyLight($blockFactory->lightFilter);
-		$chunk->setLightPopulated();
-
 		$this->chunk = FastChunkSerializer::serialize($chunk);
 
 		foreach($chunks as $i => $c){