diff --git a/tests/test_sim/test_setup.py b/tests/test_sim/test_setup.py
index edc08256..9b19d449 100644
--- a/tests/test_sim/test_setup.py
+++ b/tests/test_sim/test_setup.py
@@ -26,7 +26,7 @@ def test_parse_cutoff(setupandrun, input_cutoff, expected_result):
 def test_parse_cutoff_unknown_unit(setupandrun):
     with pytest.raises(ValueError) as e:
         setupandrun._parse_cutoff("2pc")
-        assert "Unknown unit" in str(e.value)
+    assert "Unknown unit" in str(e.value)
 
 
 def test_parse_temperature(setupandrun):