diff --git a/aiogram/types/message.py b/aiogram/types/message.py
index 67fd07fa..0097fe58 100644
--- a/aiogram/types/message.py
+++ b/aiogram/types/message.py
@@ -94,60 +94,60 @@ class Message(base.TelegramObject):
     def content_type(self):
         if self.text:
             return ContentType.TEXT
-        elif self.audio:
+        if self.audio:
             return ContentType.AUDIO
-        elif self.animation:
+        if self.animation:
             return ContentType.ANIMATION
-        elif self.document:
+        if self.document:
             return ContentType.DOCUMENT
-        elif self.game:
+        if self.game:
             return ContentType.GAME
-        elif self.photo:
+        if self.photo:
             return ContentType.PHOTO
-        elif self.sticker:
+        if self.sticker:
             return ContentType.STICKER
-        elif self.video:
+        if self.video:
             return ContentType.VIDEO
-        elif self.video_note:
+        if self.video_note:
             return ContentType.VIDEO_NOTE
-        elif self.voice:
+        if self.voice:
             return ContentType.VOICE
-        elif self.contact:
+        if self.contact:
             return ContentType.CONTACT
-        elif self.venue:
+        if self.venue:
             return ContentType.VENUE
-        elif self.location:
+        if self.location:
             return ContentType.LOCATION
-        elif self.new_chat_members:
+        if self.new_chat_members:
             return ContentType.NEW_CHAT_MEMBERS
-        elif self.left_chat_member:
+        if self.left_chat_member:
             return ContentType.LEFT_CHAT_MEMBER
-        elif self.invoice:
+        if self.invoice:
             return ContentType.INVOICE
-        elif self.successful_payment:
+        if self.successful_payment:
             return ContentType.SUCCESSFUL_PAYMENT
-        elif self.connected_website:
+        if self.connected_website:
             return ContentType.CONNECTED_WEBSITE
-        elif self.migrate_from_chat_id:
+        if self.migrate_from_chat_id:
             return ContentType.MIGRATE_FROM_CHAT_ID
-        elif self.migrate_to_chat_id:
+        if self.migrate_to_chat_id:
             return ContentType.MIGRATE_TO_CHAT_ID
-        elif self.pinned_message:
+        if self.pinned_message:
             return ContentType.PINNED_MESSAGE
-        elif self.new_chat_title:
+        if self.new_chat_title:
             return ContentType.NEW_CHAT_TITLE
-        elif self.new_chat_photo:
+        if self.new_chat_photo:
             return ContentType.NEW_CHAT_PHOTO
-        elif self.delete_chat_photo:
+        if self.delete_chat_photo:
             return ContentType.DELETE_CHAT_PHOTO
-        elif self.group_chat_created:
+        if self.group_chat_created:
             return ContentType.GROUP_CHAT_CREATED
-        elif self.passport_data:
+        if self.passport_data:
             return ContentType.PASSPORT_DATA
-        elif self.poll:
+        if self.poll:
             return ContentType.POLL
-        else:
-            return ContentType.UNKNOWN
+
+        return ContentType.UNKNOWN
 
     def is_command(self):
         """
diff --git a/aiogram/types/message_entity.py b/aiogram/types/message_entity.py
index abb4f060..8b2e62d4 100644
--- a/aiogram/types/message_entity.py
+++ b/aiogram/types/message_entity.py
@@ -52,27 +52,27 @@ class MessageEntity(base.TelegramObject):
             if as_html:
                 return markdown.hbold(entity_text)
             return markdown.bold(entity_text)
-        elif self.type == MessageEntityType.ITALIC:
+        if self.type == MessageEntityType.ITALIC:
             if as_html:
                 return markdown.hitalic(entity_text)
             return markdown.italic(entity_text)
-        elif self.type == MessageEntityType.PRE:
+        if self.type == MessageEntityType.PRE:
             if as_html:
                 return markdown.hpre(entity_text)
             return markdown.pre(entity_text)
-        elif self.type == MessageEntityType.CODE:
+        if self.type == MessageEntityType.CODE:
             if as_html:
                 return markdown.hcode(entity_text)
             return markdown.code(entity_text)
-        elif self.type == MessageEntityType.URL:
+        if self.type == MessageEntityType.URL:
             if as_html:
                 return markdown.hlink(entity_text, entity_text)
             return markdown.link(entity_text, entity_text)
-        elif self.type == MessageEntityType.TEXT_LINK:
+        if self.type == MessageEntityType.TEXT_LINK:
             if as_html:
                 return markdown.hlink(entity_text, self.url)
             return markdown.link(entity_text, self.url)
-        elif self.type == MessageEntityType.TEXT_MENTION and self.user:
+        if self.type == MessageEntityType.TEXT_MENTION and self.user:
             return self.user.get_mention(entity_text)
         return entity_text
 
diff --git a/aiogram/utils/helper.py b/aiogram/utils/helper.py
index eeabca7c..443a2ffe 100644
--- a/aiogram/utils/helper.py
+++ b/aiogram/utils/helper.py
@@ -120,15 +120,15 @@ class HelperMode(Helper):
         """
         if mode == cls.SCREAMING_SNAKE_CASE:
             return cls._screaming_snake_case(text)
-        elif mode == cls.snake_case:
+        if mode == cls.snake_case:
             return cls._snake_case(text)
-        elif mode == cls.lowercase:
+        if mode == cls.lowercase:
             return cls._snake_case(text).replace('_', '')
-        elif mode == cls.lowerCamelCase:
+        if mode == cls.lowerCamelCase:
             return cls._camel_case(text)
-        elif mode == cls.CamelCase:
+        if mode == cls.CamelCase:
             return cls._camel_case(text, True)
-        elif callable(mode):
+        if callable(mode):
             return mode(text)
         return text
 
diff --git a/aiogram/utils/payload.py b/aiogram/utils/payload.py
index 45643553..0c5e8ae9 100644
--- a/aiogram/utils/payload.py
+++ b/aiogram/utils/payload.py
@@ -52,14 +52,14 @@ def prepare_arg(value):
     """
     if value is None:
         return value
-    elif isinstance(value, (list, dict)) or hasattr(value, 'to_python'):
+    if isinstance(value, (list, dict)) or hasattr(value, 'to_python'):
         return json.dumps(_normalize(value))
-    elif isinstance(value, datetime.timedelta):
+    if isinstance(value, datetime.timedelta):
         now = datetime.datetime.now()
         return int((now + value).timestamp())
-    elif isinstance(value, datetime.datetime):
+    if isinstance(value, datetime.datetime):
         return round(value.timestamp())
-    elif isinstance(value, LazyProxy):
+    if isinstance(value, LazyProxy):
         return str(value)
     return value