diff --git a/pyrogram/client/ext/base_client.py b/pyrogram/client/ext/base_client.py
index c8a6029d..c78997c1 100644
--- a/pyrogram/client/ext/base_client.py
+++ b/pyrogram/client/ext/base_client.py
@@ -41,7 +41,6 @@ class BaseClient:
         platform.release()
     )
 
-    SYSTEM_LANG_CODE = "en"
     LANG_CODE = "en"
 
     INVITE_LINK_RE = re.compile(r"^(?:https?://)?(?:www\.)?(?:t(?:elegram)?\.(?:org|me|dog)/joinchat/)([\w-]+)$")