diff --git a/resources/lang/es_ES/config.php b/resources/lang/es_ES/config.php
index 9067645275..5b382a0cb8 100644
--- a/resources/lang/es_ES/config.php
+++ b/resources/lang/es_ES/config.php
@@ -1,4 +1,6 @@
 <?php
+declare(strict_types=1);
+
 /**
  * config.php
  * Copyright (C) 2016 thegrumpydictator@gmail.com