diff --git a/driver/database/data_sql.py b/driver/database/data_sql.py
index fae5704..abac19c 100644
--- a/driver/database/data_sql.py
+++ b/driver/database/data_sql.py
@@ -12,14 +12,11 @@ class Chats(BASE):
         self.chat_id = chat_id
         self.chat_name = chat_name
 
-
 Chats.__table__.create(checkfirst=True)
 
-
 CHATS_LOCK = threading.RLock()
 CHATS_DATA = set()
 
-
 def del_chat(chat_id):
     with CHATS_LOCK:
         chat = SESSION.query(Chats).get(str(chat_id))