diff --git a/f2ap/config.py b/f2ap/config.py
index 7b24977..e5c3c71 100644
--- a/f2ap/config.py
+++ b/f2ap/config.py
@@ -29,8 +29,8 @@ def __init__(
         private_key: str,
         display_name: str = None,
         summary: str = None,
-        avatar: str|None = None,
-        header: str|None = None,
+        avatar: str | None = None,
+        header: str | None = None,
         followings: [str] = None,
         attachments: {str: str} = None,
     ):
diff --git a/f2ap/model.py b/f2ap/model.py
index 025e057..dff2b04 100644
--- a/f2ap/model.py
+++ b/f2ap/model.py
@@ -108,7 +108,7 @@ class Attachment(BaseModel):
 
 class PropertyValueAttachment(Attachment):
     def __init__(self, name: str, value: str):
-        super().__init__(type='PropertyValue', name=name, value=value)
+        super().__init__(type="PropertyValue", name=name, value=value)
 
 
 class PublicKey(BaseModel):
@@ -150,8 +150,16 @@ def make(cls, actor: ConfigActor):
             preferredUsername=actor.preferred_username,
             name=actor.display_name,
             summary=str(Markdown(actor.summary)),
-            icon=ImageFile.from_file(actor.avatar, f"{actor.id}/avatar") if actor.avatar is not None else None,
-            image=ImageFile.from_file(actor.header, f"{actor.id}/header") if actor.header is not None else None,
+            icon=(
+                ImageFile.from_file(actor.avatar, f"{actor.id}/avatar")
+                if actor.avatar is not None
+                else None
+            ),
+            image=(
+                ImageFile.from_file(actor.header, f"{actor.id}/header")
+                if actor.header is not None
+                else None
+            ),
             attachment=cls.make_attachments(actor.attachments),
             following=f"{actor.id}/following",
             followers=f"{actor.id}/followers",