diff --git a/aiida_siesta/calculations/siesta.py b/aiida_siesta/calculations/siesta.py
index 8e3631c..cd17e02 100644
--- a/aiida_siesta/calculations/siesta.py
+++ b/aiida_siesta/calculations/siesta.py
@@ -621,6 +621,9 @@ def prepare_for_submission(self, folder):  # pylint: disable=too-many-statements
                 os.path.join(parent_calc_folder.get_remote_path(), self._restart_copy_from), self._restart_copy_to
             ))
             input_params.update({'dm-use-save-dm': "T"})
+        else:
+            # Explicitly set dm-use-save-dm to false due to new siesta defaults
+            input_params.update({'dm-use-save-dm': "F"})
 
         # ===================================== FDF file creation ====================================