diff --git a/ffcx/codegeneration/C/form.py b/ffcx/codegeneration/C/form.py
index 0ea20d38c..d92760c39 100644
--- a/ffcx/codegeneration/C/form.py
+++ b/ffcx/codegeneration/C/form.py
@@ -121,7 +121,9 @@ def generator(ir: FormIR, options):
             f"static ufcx_integral* form_integrals_{ir.name}[{sizes}] = {{{values}}};"
         )
         d["form_integrals"] = f"form_integrals_{ir.name}"
-        values = ", ".join(f"{i}" for i, domains in zip(integral_ids, integral_domains) for _ in domains)
+        values = ", ".join(
+            f"{i}" for i, domains in zip(integral_ids, integral_domains) for _ in domains
+        )
         d["form_integral_ids_init"] = f"int form_integral_ids_{ir.name}[{sizes}] = {{{values}}};"
         d["form_integral_ids"] = f"form_integral_ids_{ir.name}"
     else:
diff --git a/ffcx/ir/representationutils.py b/ffcx/ir/representationutils.py
index 99f5ca45c..48fd1f35e 100644
--- a/ffcx/ir/representationutils.py
+++ b/ffcx/ir/representationutils.py
@@ -68,15 +68,16 @@ def create_quadrature_points_and_weights(
                     create_quadrature("interval", degree, rule, elements) for _ in range(3)
                 ]
             pts[cell_name] = np.array(
-                [tuple(i[0] for i in p) for p in itertools.product(*[f[0] for f in tensor_factors[cell_name]])]
+                [
+                    tuple(i[0] for i in p)
+                    for p in itertools.product(*[f[0] for f in tensor_factors[cell_name]])
+                ]
             )
             wts[cell_name] = np.array(
                 [np.prod(p) for p in itertools.product(*[f[1] for f in tensor_factors[cell_name]])]
             )
         else:
-            pts[cell_name], wts[cell_name] = create_quadrature(
-                cell_name, degree, rule, elements
-            )
+            pts[cell_name], wts[cell_name] = create_quadrature(cell_name, degree, rule, elements)
     elif integral_type in ufl.measure.facet_integral_types:
         for ft in cell.facet_types():
             pts[ft.cellname()], wts[ft.cellname()] = create_quadrature(