diff --git a/src/pocketmine/level/format/io/FormatConverter.php b/src/pocketmine/level/format/io/FormatConverter.php
index 574deb9029..878b81c331 100644
--- a/src/pocketmine/level/format/io/FormatConverter.php
+++ b/src/pocketmine/level/format/io/FormatConverter.php
@@ -119,6 +119,7 @@ class FormatConverter{
 		$data->setSpawn($oldData->getSpawn());
 		$data->setTime($oldData->getTime());
 
+		$data->save();
 		$this->logger->info("Finished converting manifest");
 		//TODO: add more properties as-needed
 	}