diff --git a/src/pocketmine/Server.php b/src/pocketmine/Server.php
index a1e2e6821..da4e56d61 100644
--- a/src/pocketmine/Server.php
+++ b/src/pocketmine/Server.php
@@ -2246,6 +2246,9 @@ class Server{
 		$this->crashDump();
 	}
 
+	/**
+	 * @return void
+	 */
 	public function crashDump(){
 		while(@ob_end_flush()){}
 		if(!$this->isRunning){