diff --git a/tests/test_mixed_function_space_with_mixed_mesh.py b/tests/test_mixed_function_space_with_mixed_mesh.py
index 1c2824bb..fdcdce7b 100644
--- a/tests/test_mixed_function_space_with_mixed_mesh.py
+++ b/tests/test_mixed_function_space_with_mixed_mesh.py
@@ -48,7 +48,7 @@ def test_mixed_function_space_with_mixed_mesh_restrictions_base():
     assert len(integral_data.domain_integral_type_map) == 2
     assert integral_data.domain_integral_type_map[mesh0] == "interior_facet"
     assert integral_data.domain_integral_type_map[mesh1] == "exterior_facet"
-    # e
+    # c
     form = div(f) * inner(grad(f1), grad(f1)) * inner(grad(u1), grad(v0)) * dx1
     form_data = compute_form_data(form, do_split_coefficients={f: [f0_split, f1_split]})
     integral_data, = form_data.integral_data
@@ -89,7 +89,7 @@ def test_mixed_function_space_with_mixed_mesh_3_cg3_bdm3_dg2_dx1():
     assert integral_data.domain_integral_type_map[mesh1] == "cell"
     assert integral_data.domain_integral_type_map[mesh2] == "cell"
     kernel, = compile_form(form)
-    assert kernel.domain_number == 1
+    assert kernel.domain_number == 0
     assert kernel.integral_type == "cell"
     assert kernel.subdomain_id == (999, )
     assert kernel.active_domain_numbers.coordinates == (0, 1, 2)
@@ -199,14 +199,14 @@ def test_mixed_function_space_with_mixed_mesh_restrictions_dg2_dg3_ds1():
     assert integral_data.domain_integral_type_map[mesh0] == "interior_facet"
     assert integral_data.domain_integral_type_map[mesh1] == "exterior_facet"
     kernel, = compile_form(form)
-    assert kernel.domain_number == 1
+    assert kernel.domain_number == 0
     assert kernel.integral_type == "exterior_facet"
     assert kernel.subdomain_id == (777, )
     assert kernel.active_domain_numbers.coordinates == (0, 1)
     assert kernel.active_domain_numbers.cell_orientations == ()
     assert kernel.active_domain_numbers.cell_sizes == ()
-    assert kernel.active_domain_numbers.exterior_facets == (1, )
-    assert kernel.active_domain_numbers.interior_facets == (0, )
+    assert kernel.active_domain_numbers.exterior_facets == (0, )
+    assert kernel.active_domain_numbers.interior_facets == (1, )
     assert kernel.coefficient_numbers == ((0, (0, 1)), )
     assert isinstance(kernel.arguments[0], kernel_args.OutputKernelArg)
     assert isinstance(kernel.arguments[1], kernel_args.CoordinatesKernelArg)
@@ -216,8 +216,8 @@ def test_mixed_function_space_with_mixed_mesh_restrictions_dg2_dg3_ds1():
     assert isinstance(kernel.arguments[5], kernel_args.ExteriorFacetKernelArg)
     assert isinstance(kernel.arguments[6], kernel_args.InteriorFacetKernelArg)
     assert kernel.arguments[0].loopy_arg.shape == (10, 2 * 6)
-    assert kernel.arguments[1].loopy_arg.shape == (2 * (3 * gdim), )
-    assert kernel.arguments[2].loopy_arg.shape == (3 * gdim, )
+    assert kernel.arguments[1].loopy_arg.shape == (1 * (3 * gdim), )
+    assert kernel.arguments[2].loopy_arg.shape == (2 * (3 * gdim), )
     assert kernel.arguments[3].loopy_arg.shape == (2 * 6, )
     assert kernel.arguments[4].loopy_arg.shape == (10, )
     assert kernel.arguments[5].loopy_arg.shape == (1, )
diff --git a/tsfc/ufl_utils.py b/tsfc/ufl_utils.py
index b76b6ef5..637cc490 100644
--- a/tsfc/ufl_utils.py
+++ b/tsfc/ufl_utils.py
@@ -49,6 +49,7 @@ def compute_form_data(form,
                       do_apply_restrictions=True,
                       do_estimate_degrees=True,
                       do_split_coefficients=None,
+                      do_assume_single_integral_type=False,
                       complex_mode=False):
     """Preprocess UFL form in a format suitable for TSFC. Return
     form data.
@@ -67,6 +68,7 @@ def compute_form_data(form,
         do_apply_restrictions=do_apply_restrictions,
         do_estimate_degrees=do_estimate_degrees,
         do_split_coefficients=do_split_coefficients,
+        do_assume_single_integral_type=do_assume_single_integral_type,
         complex_mode=complex_mode
     )
     constants = extract_firedrake_constants(form)