diff --git a/tests/test_mpi.py b/tests/test_mpi.py
index bf51ba11e5..c60fe6f2cd 100644
--- a/tests/test_mpi.py
+++ b/tests/test_mpi.py
@@ -2104,7 +2104,7 @@ def test_nontrivial_operator(self, mode):
             assert np.all(u.data_ro_domain[1] == 3)
 
     @pytest.mark.parallel(mode=[(4, 'basic'), (4, 'basic2'), (4, 'overlap'), (4, 'full')])
-    def test_coupled_eqs_mixed_dims(self):
+    def test_coupled_eqs_mixed_dims(self, mode):
         """
         Test an Operator that computes coupled equations over partly disjoint sets
         of Dimensions (e.g., one Eq over [x, y, z], the other Eq over [x, yi, zi]).
@@ -2720,7 +2720,7 @@ def run_adjoint_F(self, nd):
     @pytest.mark.parametrize('nd', [1, 2, 3])
     @pytest.mark.parallel(mode=[(4, 'basic2'), (4, 'diag'), (4, 'overlap'),
                                 (4, 'overlap2'), (4, 'full')])
-    def test_adjoint_F(self, nd):
+    def test_adjoint_F(self, nd, mode):
         self.run_adjoint_F(nd)
 
     @pytest.mark.parallel(mode=[(8, 'diag2'), (8, 'full')])