diff --git a/test/test_modules/test_pre_processing.py b/test/test_modules/test_pre_processing.py
index 5120a26bd290cd30428bddf0ebc143dca58a500e..92efaf38974aaf232c8688ec2f83fc89a0c7787b 100644
--- a/test/test_modules/test_pre_processing.py
+++ b/test/test_modules/test_pre_processing.py
@@ -31,6 +31,7 @@ class TestPreProcessing:
 
     @pytest.fixture
     def obj_with_exp_setup(self):
+        RunEnvironment()
         ExperimentSetup(parser_args={}, stations=['DEBW107', 'DEBY081', 'DEBW013', 'DEBW076', 'DEBW087', 'DEBW001'],
                         var_all_dict={'o3': 'dma8eu', 'temp': 'maximum'}, station_type="background")
         pre = object.__new__(PreProcessing)