diff --git a/src/maggotuba/models/trainers.py b/src/maggotuba/models/trainers.py
index e3065cb8588f4fbd0a821cb8b42fcf30d3af09c0..17b21d2e19e0c050c027879ada7b1ba01634d29b 100644
--- a/src/maggotuba/models/trainers.py
+++ b/src/maggotuba/models/trainers.py
@@ -386,7 +386,7 @@ def import_pretrained_model(backend, pretrained_model_instance):
     for file in pretrained_autoencoder_dir.iterdir():
         if not file.is_file():
             continue
-        logging.debug(f"copying file: {file.source}")
+        logging.debug(f"copying file: {file.path}")
         dst = backend.model_dir() / file.name
         if file.name.endswith("config.json"):
             with open(file) as f: