diff --git a/src/watertap_contrib/reflo/costing/tests/test_reflo_watertap_costing_package.py b/src/watertap_contrib/reflo/costing/tests/test_reflo_watertap_costing_package.py
index 9979de16..2ae26303 100644
--- a/src/watertap_contrib/reflo/costing/tests/test_reflo_watertap_costing_package.py
+++ b/src/watertap_contrib/reflo/costing/tests/test_reflo_watertap_costing_package.py
@@ -71,7 +71,8 @@ def test_lazy_flow_costing():
 
     with pytest.raises(
         RuntimeError,
-        match="Component baz_cost already exists on fs.costing but is not 42\*USD_2020/m\*\*2."):
+        match="Component baz_cost already exists on fs.costing but is not 42\*USD_2020/m\*\*2.",
+    ):
         m.fs.costing.register_flow_type("baz", 42 * pyunits.USD_2020 / pyunits.m**2)