diff --git a/snk/nest.py b/snk/nest.py
index b51d58e..d1b82a1 100644
--- a/snk/nest.py
+++ b/snk/nest.py
@@ -200,7 +200,7 @@ def copy_nonstandard_config(self, pipeline_dir: Path, config_path: Path):
           >>> nest.copy_nonstandard_config(Path('/path/to/pipeline'), Path('/path/to/config.yaml'))
         """
         config_dir = pipeline_dir / "config"
-        config_dir.mkdir()
+        config_dir.mkdir(exist_ok=True)
         shutil.copyfile(pipeline_dir / config_path, config_dir / "config.yaml")
 
     def get_paths_to_delete(self, pipeline_name: str) -> List[Path]: