diff --git a/src/utils/MainLogger.php b/src/utils/MainLogger.php
index ab88e2e583..120768cca3 100644
--- a/src/utils/MainLogger.php
+++ b/src/utils/MainLogger.php
@@ -38,7 +38,7 @@ use function trim;
 use const PHP_EOL;
 use const PTHREADS_INHERIT_NONE;
 
-class MainLogger extends \AttachableThreadedLogger{
+class MainLogger extends \AttachableThreadedLogger implements \BufferedLogger{
 
 	/** @var string */
 	protected $logFile;
@@ -149,7 +149,7 @@ class MainLogger extends \AttachableThreadedLogger{
 			$trace = $e->getTrace();
 		}
 
-		$this->synchronized(function() use ($e, $trace) : void{
+		$this->buffer(function() use ($e, $trace) : void{
 			$this->critical(self::printExceptionMessage($e));
 			foreach(Utils::printableTrace($trace) as $line){
 				$this->debug($line, true);
@@ -210,6 +210,13 @@ class MainLogger extends \AttachableThreadedLogger{
 		}
 	}
 
+	/**
+	 * @phpstan-param \Closure() : void $c
+	 */
+	public function buffer(\Closure $c) : void{
+		$this->synchronized($c);
+	}
+
 	public function shutdown() : void{
 		$this->shutdown = true;
 		$this->notify();