diff --git a/core/classes/Core/Language.php b/core/classes/Core/Language.php
index 4cec9d152d..2dc03affd9 100644
--- a/core/classes/Core/Language.php
+++ b/core/classes/Core/Language.php
@@ -47,6 +47,7 @@ class Language
         'fa_IR' => [
             'name' => 'Persian (Iran)',
             'htmlCode' => 'fa',
+            'rtl' => true,
         ],
         'fr_FR' => [
             'name' => 'French',