diff --git a/tests/test_lyrics_major.py b/tests/test_lyrics_major.py
index a74878c..3a80d6e 100644
--- a/tests/test_lyrics_major.py
+++ b/tests/test_lyrics_major.py
@@ -15,12 +15,11 @@ class TestLyricsMajor:
         assert LyricsMajor.de_json({}, client) is None
 
     def test_de_json_required(self, client):
-        json_dict = {'id': self.id, 'name': self.name, 'pretty_name': self.pretty_name}
+        json_dict = {'id': self.id, 'name': self.name}
 
         lyrics_major = LyricsMajor.de_json(json_dict, client)
         assert lyrics_major.id == self.id
         assert lyrics_major.name == self.name
-        assert lyrics_major.pretty_name == self.pretty_name
 
     def test_de_json_all(self, client):
         json_dict = {'id': self.id, 'name': self.name, 'pretty_name': self.pretty_name}
diff --git a/yandex_music/track/lyrics_major.py b/yandex_music/track/lyrics_major.py
index d1445fe..a00db45 100644
--- a/yandex_music/track/lyrics_major.py
+++ b/yandex_music/track/lyrics_major.py
@@ -15,13 +15,13 @@ class LyricsMajor(YandexMusicObject):
     Args:
         id (:obj:`int`): Уникальный идентификатор сервиса.
         name (:obj:`str`): Имя сервиса.
-        pretty_name (:obj:`str`): Человекочитаемое имя сервиса.
+        pretty_name (:obj:`str`, optional): Человекочитаемое имя сервиса.
         client (:obj:`yandex_music.Client`, optional): Клиент Yandex Music.
     """
 
     id: int
     name: str
-    pretty_name: str
+    pretty_name: Optional[str] = None
     client: Optional['Client'] = None
 
     def __post_init__(self):