diff --git a/pyomo/contrib/fbbt/tests/test_fbbt.py b/pyomo/contrib/fbbt/tests/test_fbbt.py
index 92cb257f165..5e8d656eeab 100644
--- a/pyomo/contrib/fbbt/tests/test_fbbt.py
+++ b/pyomo/contrib/fbbt/tests/test_fbbt.py
@@ -1331,6 +1331,7 @@ def test_named_expr(self):
         self.assertAlmostEqual(m.x.lb, 2)
         self.assertAlmostEqual(m.x.ub, 3)
 
+
 class TestFBBT(FbbtTestBase, unittest.TestCase):
     def setUp(self) -> None:
         self.tightener = fbbt