diff --git a/mp/lambda_common.py b/mp/lambda_common.py
index 4c690a5..b8d2bc7 100644
--- a/mp/lambda_common.py
+++ b/mp/lambda_common.py
@@ -89,6 +89,7 @@ def write_metadata(writer: MetadataWriter, key: ImageKey) -> object:  # pragma:
     with NamedTemporaryFile(suffix=key.extension) as temp:
         download_file_from_s3(key, temp.name)
         metadata = extract_metadata(key, temp.name)
+        debug(metadata)
         return writer.write(metadata)