diff --git a/lib/Service/BinExt.php b/lib/Service/BinExt.php
index a292d9db..2ccef584 100644
--- a/lib/Service/BinExt.php
+++ b/lib/Service/BinExt.php
@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types=1);
+
 namespace OCA\Memories\Service;
 
 use OCA\Memories\Util;