diff --git a/funkwhale_network/schemas.py b/funkwhale_network/schemas.py
index ec95805a071e4498790fdf34601abd75bf9afc01..7e0bedd82339c3bd151f4e0f181a5630fe0ceded 100644
--- a/funkwhale_network/schemas.py
+++ b/funkwhale_network/schemas.py
@@ -113,7 +113,9 @@ class MetadataSchema(marshmallow.Schema):
     nodeName = marshmallow.fields.String(required=True)
     private = marshmallow.fields.Boolean(required=True)
     library = marshmallow.fields.Nested(LibraryMetadataSchema, required=True)
-    usage = marshmallow.fields.Nested(MetadataUsageSchema, required=False, allow_none=True)
+    usage = marshmallow.fields.Nested(
+        MetadataUsageSchema, required=False, allow_none=True
+    )
 
     class Meta:
         unknown = marshmallow.EXCLUDE