diff --git a/uncoverml/interface_utils.py b/uncoverml/interface_utils.py
index e9f396e1..a6aea1f2 100644
--- a/uncoverml/interface_utils.py
+++ b/uncoverml/interface_utils.py
@@ -13,7 +13,7 @@
 
 
 def rename_files_before_upload(config):
-    job_results_dir = config.output_dir
+    job_results_dir = Path(config.output_dir)
     all_paths = job_results_dir.glob('**/*')
     all_files = [f for f in all_paths if f.is_file()]
     all_files_ex_model = [f for f in all_files if f.name != 'config.model']