diff --git a/test/test_helpers/test_helpers.py b/test/test_helpers/test_helpers.py
index 7e6b1b3b77af69c68e4de9369b29b12b7f501878..29e2601c311fed6671f65a65ade1edd285ee78f7 100644
--- a/test/test_helpers/test_helpers.py
+++ b/test/test_helpers/test_helpers.py
@@ -14,8 +14,7 @@ import string
 from mlair.helpers import to_list, dict_to_xarray, float_round, remove_items, extract_value, select_from_dict
 from mlair.helpers import PyTestRegex
 from mlair.helpers import Logger, TimeTracking
-from mlair.helpers.helpers import is_xarray, convert2xrda, convert_1d_np2xr
-
+from mlair.helpers.helpers import is_xarray, convert2xrda
 
 
 class TestToList: