diff --git a/aiogram/types/poll.py b/aiogram/types/poll.py
index 16f83634..84fde48d 100644
--- a/aiogram/types/poll.py
+++ b/aiogram/types/poll.py
@@ -38,6 +38,6 @@ class Poll(base.TelegramObject):
     total_voter_count: base.Integer = fields.Field()
     is_closed: base.Boolean = fields.Field()
     is_anonymous: base.Boolean = fields.Field()
-    poll_type: base.String = fields.Field(alias="type")
+    type: base.String = fields.Field()
     allows_multiple_answers: base.Boolean = fields.Field()
     correct_option_id: base.Integer = fields.Field()
diff --git a/aiogram/types/reply_keyboard.py b/aiogram/types/reply_keyboard.py
index 4f4c2404..7d2283ec 100644
--- a/aiogram/types/reply_keyboard.py
+++ b/aiogram/types/reply_keyboard.py
@@ -10,10 +10,10 @@ class KeyboardButtonPollType(base.TelegramObject):
 
     https://core.telegram.org/bots/api#keyboardbuttonpolltype
     """
-    poll_type: base.String = fields.Field(alias="type")
+    type: base.String = fields.Field()
 
-    def __init__(self, poll_type: base.String):
-        super(KeyboardButtonPollType, self).__init__(poll_type=poll_type)
+    def __init__(self, type: base.String):
+        super(KeyboardButtonPollType, self).__init__(type=type)
 
 
 class ReplyKeyboardMarkup(base.TelegramObject):