diff --git a/examples/example_utils.py b/examples/example_utils.py
index ac0608ccb845d6cb94c86d979b4422a3d4d09108..9e61b49a1858d4115575c003d264f468f7279c64 100644
--- a/examples/example_utils.py
+++ b/examples/example_utils.py
@@ -179,7 +179,7 @@ class HysopArgParser(argparse.ArgumentParser):
         
         if args.clean:
             for pname in ('',)+self.generate_io_params:
-                dump_dir = getattr(args, vname)
+                dump_dir = args.dump_dir
                 self._rmfiles(dump_dir, 'h5')
                 self._rmfiles(dump_dir, 'xmf')
                 self._rmfiles(dump_dir, 'out')