diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index 94b4305f1..e1fc23261 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -1300,7 +1300,7 @@ class Server{
 		if(($player = $this->getPlayerExact($name)) !== null){
 			$player->recalculatePermissions();
 		}
-		$this->operators->save(true);
+		$this->operators->save();
 	}
 
 	/**
@@ -1320,7 +1320,7 @@ class Server{
 	 */
 	public function addWhitelist(string $name){
 		$this->whitelist->set(strtolower($name), true);
-		$this->whitelist->save(true);
+		$this->whitelist->save();
 	}
 
 	/**
@@ -1691,7 +1691,7 @@ class Server{
 			}
 
 			if($this->properties->hasChanged()){
-				$this->properties->save(true);
+				$this->properties->save();
 			}
 
 			if(!($this->getDefaultLevel() instanceof Level)){
diff --git a/src/pocketmine/utils/Config.php b/src/pocketmine/utils/Config.php
index c8609afdc..30ab3dadd 100644
--- a/src/pocketmine/utils/Config.php
+++ b/src/pocketmine/utils/Config.php
@@ -23,7 +23,6 @@ declare(strict_types=1);
 
 namespace pocketmine\utils;
 
-use pocketmine\scheduler\FileWriteTask;
 use pocketmine\Server;
 
 
@@ -187,11 +186,9 @@ class Config{
 	}
 
 	/**
-	 * @param bool $async
-	 *
 	 * @return bool
 	 */
-	public function save(bool $async = false) : bool{
+	public function save() : bool{
 		if($this->correct){
 			try{
 				$content = null;
@@ -216,11 +213,7 @@ class Config{
 						throw new \InvalidStateException("Config type is unknown, has not been set or not detected");
 				}
 
-				if($async){
-					Server::getInstance()->getAsyncPool()->submitTask(new FileWriteTask($this->file, $content));
-				}else{
-					file_put_contents($this->file, $content);
-				}
+				file_put_contents($this->file, $content);
 			}catch(\Throwable $e){
 				$logger = Server::getInstance()->getLogger();
 				$logger->critical("Could not save Config " . $this->file . ": " . $e->getMessage());