diff --git a/app/models/notification.py b/app/models/notification.py
index dd7aaa9..5e544fd 100644
--- a/app/models/notification.py
+++ b/app/models/notification.py
@@ -118,9 +118,12 @@ class ChannelMessageBase(NotificationDetail):
         channel_type: "ChannelType",
     ) -> Self:
         try:
-            avatar_url = getattr(user, 'avatar_url', 'https://lazer-data.g0v0.top/default.jpg') or 'https://lazer-data.g0v0.top/default.jpg'
+            avatar_url = (
+                getattr(user, "avatar_url", "https://lazer-data.g0v0.top/default.jpg")
+                or "https://lazer-data.g0v0.top/default.jpg"
+            )
         except Exception:
-            avatar_url = 'https://lazer-data.g0v0.top/default.jpg'
+            avatar_url = "https://lazer-data.g0v0.top/default.jpg"
         instance = cls(
             title=truncate(message.content, CONTENT_TRUNCATE),
             type=channel_type.value.lower(),