diff --git a/pyomo/contrib/coramin/domain_reduction/tests/test_dbt.py b/pyomo/contrib/coramin/domain_reduction/tests/test_dbt.py
index 6ed3d765484..e71e3ad6ef0 100644
--- a/pyomo/contrib/coramin/domain_reduction/tests/test_dbt.py
+++ b/pyomo/contrib/coramin/domain_reduction/tests/test_dbt.py
@@ -786,9 +786,7 @@ def create_model(self):
 
         return m
 
-    @pytest.mark.parallel
-    @pytest.mark.two_proc
-    @pytest.mark.three_proc
+    @pytest.mark.mpi
     def test_bounds_tightening(self):
         from mpi4py import MPI