diff --git a/telethon/_client/chats.py b/telethon/_client/chats.py
index 3034b5d9..acba307e 100644
--- a/telethon/_client/chats.py
+++ b/telethon/_client/chats.py
@@ -69,21 +69,21 @@ class _ChatAction:
             return action
 
         return {
-            enums.TYPING: _tl.SendMessageTypingAction(),
-            enums.CONTACT: _tl.SendMessageChooseContactAction(),
-            enums.GAME: _tl.SendMessageGamePlayAction(),
-            enums.LOCATION: _tl.SendMessageGeoLocationAction(),
-            enums.STICKER: _tl.SendMessageChooseStickerAction(),
-            enums.RECORD_AUDIO: _tl.SendMessageRecordAudioAction(),
-            enums.RECORD_ROUND: _tl.SendMessageRecordRoundAction(),
-            enums.RECORD_VIDEO: _tl.SendMessageRecordVideoAction(),
-            enums.AUDIO: _tl.SendMessageUploadAudioAction(1),
-            enums.ROUND: _tl.SendMessageUploadRoundAction(1),
-            enums.VIDEO: _tl.SendMessageUploadVideoAction(1),
-            enums.PHOTO: _tl.SendMessageUploadPhotoAction(1),
-            enums.DOCUMENT: _tl.SendMessageUploadDocumentAction(1),
-            enums.CANCEL: _tl.SendMessageCancelAction(),
-        }[enums.parse_typing_action(action)]
+            enums.Action.TYPING: _tl.SendMessageTypingAction(),
+            enums.Action.CONTACT: _tl.SendMessageChooseContactAction(),
+            enums.Action.GAME: _tl.SendMessageGamePlayAction(),
+            enums.Action.LOCATION: _tl.SendMessageGeoLocationAction(),
+            enums.Action.STICKER: _tl.SendMessageChooseStickerAction(),
+            enums.Action.RECORD_AUDIO: _tl.SendMessageRecordAudioAction(),
+            enums.Action.RECORD_ROUND: _tl.SendMessageRecordRoundAction(),
+            enums.Action.RECORD_VIDEO: _tl.SendMessageRecordVideoAction(),
+            enums.Action.AUDIO: _tl.SendMessageUploadAudioAction(1),
+            enums.Action.ROUND: _tl.SendMessageUploadRoundAction(1),
+            enums.Action.VIDEO: _tl.SendMessageUploadVideoAction(1),
+            enums.Action.PHOTO: _tl.SendMessageUploadPhotoAction(1),
+            enums.Action.DOCUMENT: _tl.SendMessageUploadDocumentAction(1),
+            enums.Action.CANCEL: _tl.SendMessageCancelAction(),
+        }[enums.Action(action)]
 
     def progress(self, current, total):
         if hasattr(self._action, 'progress'):
@@ -98,7 +98,7 @@ class _ParticipantsIter(requestiter.RequestIter):
             else:
                 filter = _tl.ChannelParticipantsRecent()
         else:
-            filter = enums.parse_participant(filter)
+            filter = enums.Participant(filter)
             if filter == enums.Participant.ADMIN:
                 filter = _tl.ChannelParticipantsAdmins()
             elif filter == enums.Participant.BOT:
diff --git a/telethon/_client/downloads.py b/telethon/_client/downloads.py
index 6339b8c9..d472dbcf 100644
--- a/telethon/_client/downloads.py
+++ b/telethon/_client/downloads.py
@@ -210,7 +210,7 @@ async def download_profile_photo(
         photo = entity.photo
 
     if isinstance(photo, (_tl.UserProfilePhoto, _tl.ChatPhoto)):
-        thumb = enums.Size.ORIGINAL if thumb == () else enums.parse_photo_size(thumb)
+        thumb = enums.Size.ORIGINAL if thumb == () else enums.Size(thumb)
 
         dc_id = photo.dc_id
         loc = _tl.InputPeerPhotoFileLocation(
@@ -494,11 +494,11 @@ def _get_thumb(thumbs, thumb):
     if isinstance(thumb, tlobject.TLObject):
         return thumb
 
-    thumb = enums.parse_photo_size(thumb)
+    thumb = enums.Size(thumb)
     return min(
         thumbs,
         default=None,
-        key=lambda t: abs(thumb - enums.parse_photo_size(t.type))
+        key=lambda t: abs(thumb - enums.Size(t.type))
     )
 
 def _download_cached_photo_size(self: 'TelegramClient', size, file):
diff --git a/telethon/_client/telegrambaseclient.py b/telethon/_client/telegrambaseclient.py
index 8ed1a599..10cd2d7f 100644
--- a/telethon/_client/telegrambaseclient.py
+++ b/telethon/_client/telegrambaseclient.py
@@ -199,7 +199,7 @@ def init(
         enums.ConnectionMode.FULL: transports.Full(),
         enums.ConnectionMode.INTERMEDIATE: transports.Intermediate(),
         enums.ConnectionMode.ABRIDGED: transports.Abridged(),
-    }[enums.parse_conn_mode(connection)]
+    }[enums.ConnectionMode(connection)]
     init_proxy = None
 
     # Used on connection. Capture the variables in a lambda since
diff --git a/telethon/_misc/enums.py b/telethon/_misc/enums.py
index 283030f3..79b20242 100644
--- a/telethon/_misc/enums.py
+++ b/telethon/_misc/enums.py
@@ -129,25 +129,3 @@ class Size(Enum):
             Size.ANIMATED: 7,
             Size.VIDEO: 6,
         }[self]
-
-
-def _mk_parser(cls):
-    def parser(value):
-        if isinstance(value, cls):
-            return value
-        elif isinstance(value, str):
-            for variant in cls:
-                if value == variant.value:
-                    return variant
-
-            raise ValueError(f'unknown {cls.__name__}: {value!r}')
-        else:
-            raise TypeError(f'not a valid {cls.__name__}: {type(value).__name__!r}')
-
-    return parser
-
-
-parse_conn_mode = _mk_parser(ConnectionMode)
-parse_participant = _mk_parser(Participant)
-parse_typing_action = _mk_parser(Action)
-parse_photo_size = _mk_parser(Size)