diff --git a/lightsim2grid/tests/test_LightSimBackend.py b/lightsim2grid/tests/test_LightSimBackend.py
index c2cebb5..ce30a54 100644
--- a/lightsim2grid/tests/test_LightSimBackend.py
+++ b/lightsim2grid/tests/test_LightSimBackend.py
@@ -146,16 +146,14 @@ def make_backend(self, detailed_infos_for_cascading_failures=False):
 
 
 class TestShuntAction(BaseTestShuntAction, unittest.TestCase):
+    tests_skipped = ["test_shunt_effect"]  if sys.platform.startswith("win32") else []  # TODO I don't know why but needs to be fixed
     def make_backend(self, detailed_infos_for_cascading_failures=False):
         with warnings.catch_warnings():
             warnings.filterwarnings("ignore")
             bk = LightSimBackend(detailed_infos_for_cascading_failures=detailed_infos_for_cascading_failures)
-        if sys.platform.startswith("win32"):
-            self.tests_skipped = ["test_shunt_effect"]  # TODO I don't know why but needs to be fixed
         return bk
     
 
-
 class TestResetEqualsLoadGrid(BaseTestResetEqualsLoadGrid, unittest.TestCase):
     def setUp(self):
         BaseTestResetEqualsLoadGrid.setUp(self)