diff --git a/google/genai/_interactions/_files.py b/google/genai/_interactions/_files.py
index f2ddd9cc5..b1e81839d 100644
--- a/google/genai/_interactions/_files.py
+++ b/google/genai/_interactions/_files.py
@@ -42,7 +42,8 @@ def is_base64_file_input(obj: object) -> TypeGuard[Base64FileInput]:
 
 def is_file_content(obj: object) -> TypeGuard[FileContent]:
     return (
-        isinstance(obj, bytes) or isinstance(obj, tuple) or isinstance(obj, io.IOBase) or isinstance(obj, os.PathLike)
+        isinstance(obj, bytes) or isinstance(obj, tuple) or
+        isinstance(obj, io.IOBase) or isinstance(obj, os.PathLike)
     )