diff --git a/etebase_fastapi/collection.py b/etebase_fastapi/collection.py
index 9e25b38..14abee9 100644
--- a/etebase_fastapi/collection.py
+++ b/etebase_fastapi/collection.py
@@ -534,14 +534,20 @@ def fetch_updates(
 
 @item_router.post("/item/transaction/", dependencies=[Depends(has_write_access), *PERMISSIONS_READWRITE])
 def item_transaction(
-    collection_uid: str, data: ItemBatchIn, stoken: t.Optional[str] = None, user: UserType = Depends(get_authenticated_user)
+    collection_uid: str,
+    data: ItemBatchIn,
+    stoken: t.Optional[str] = None,
+    user: UserType = Depends(get_authenticated_user),
 ):
     return item_bulk_common(data, user, stoken, collection_uid, validate_etag=True)
 
 
 @item_router.post("/item/batch/", dependencies=[Depends(has_write_access), *PERMISSIONS_READWRITE])
 def item_batch(
-    collection_uid: str, data: ItemBatchIn, stoken: t.Optional[str] = None, user: UserType = Depends(get_authenticated_user)
+    collection_uid: str,
+    data: ItemBatchIn,
+    stoken: t.Optional[str] = None,
+    user: UserType = Depends(get_authenticated_user),
 ):
     return item_bulk_common(data, user, stoken, collection_uid, validate_etag=False)
 
diff --git a/etebase_fastapi/sendfile/utils.py b/etebase_fastapi/sendfile/utils.py
index 7c8b1f2..c35d6df 100644
--- a/etebase_fastapi/sendfile/utils.py
+++ b/etebase_fastapi/sendfile/utils.py
@@ -56,7 +56,9 @@ def _sanitize_path(filepath):
     try:
         filepath_abs.relative_to(path_root)
     except ValueError:
-        raise HttpError("generic", "{} wrt {} is impossible".format(filepath_abs, path_root), status_code=status.HTTP_404_NOT_FOUND)
+        raise HttpError(
+            "generic", "{} wrt {} is impossible".format(filepath_abs, path_root), status_code=status.HTTP_404_NOT_FOUND
+        )
 
     return filepath_abs