diff --git a/main.py b/main.py
index 3bc1e3c..e3bc8de 100644
--- a/main.py
+++ b/main.py
@@ -9,15 +9,12 @@ bot = telebot.TeleBot(os.getenv("TELEGRAM_TOKEN"))
 
 
 all_letters = "йцукенгшщзхъёфывапролджэячсмитьбюЙЦУКЕНГШЩЗХЪЁФЫВАПРОЛДЖЭЯЧСМИТЬБЮ"
-answers = {
-    "да", "ДА", "Да", "дА",
-    "дa", "ДA", "Дa", "дA"
-}
+answers = {"да", "дa"}
 
 
 @bot.message_handler()
 def do_action(message: Message):
-    convert_text = ''.join([letter for letter in message.text if letter in all_letters])
+    convert_text = ''.join([letter for letter in message.text if letter in all_letters]).lower()
     if convert_text in answers:
         bot.reply_to(message, "Пизда!")