diff --git a/manimlib/scene/scene_file_writer.py b/manimlib/scene/scene_file_writer.py
index e2efd5e2..b67d97f3 100644
--- a/manimlib/scene/scene_file_writer.py
+++ b/manimlib/scene/scene_file_writer.py
@@ -34,6 +34,7 @@ class SceneFileWriter(object):
         # Previous output_file_name
         # TODO, address this in extract_scene et. al.
         "file_name": None,
+        "input_file_path": "",  # ??
         "output_directory": None,
     }