diff --git a/python/demo/demo_axis/demo_axis.py b/python/demo/demo_axis/demo_axis.py
index b7d558eb322..a2ea4451bbb 100644
--- a/python/demo/demo_axis/demo_axis.py
+++ b/python/demo/demo_axis/demo_axis.py
@@ -340,7 +340,9 @@ def create_eps_mu(pml, rho, eps_bkg, mu_bkg):
         au_tag, bkg_tag, pml_tag, scatt_tag)
 
 model = MPI.COMM_WORLD.bcast(model, root=0)
-msh, cell_tags, facet_tags = io.gmshio.model_to_mesh(model, MPI.COMM_WORLD, 0, gdim=2)
+mesh_partitioner = mesh.create_cell_partitioner(mesh.GhostMode.shared_facet)
+msh, cell_tags, facet_tags = io.gmshio.model_to_mesh(model, MPI.COMM_WORLD, 0, gdim=2,
+                                                     partitioner=mesh_partitioner)
 
 gmsh.finalize()
 MPI.COMM_WORLD.barrier()
diff --git a/python/demo/demo_pml/demo_pml.py b/python/demo/demo_pml/demo_pml.py
index f6a7bb1536c..7dff951f159 100644
--- a/python/demo/demo_pml/demo_pml.py
+++ b/python/demo/demo_pml/demo_pml.py
@@ -176,7 +176,9 @@ def pml_coordinates(x: ufl.indexed.Indexed, alpha: float, k0: complex, l_dom: fl
                                in_wire_size, on_wire_size, scatt_size, pml_size,
                                au_tag, bkg_tag, scatt_tag, pml_tag)
 model = MPI.COMM_WORLD.bcast(model, root=0)
-msh, cell_tags, facet_tags = gmshio.model_to_mesh(model, MPI.COMM_WORLD, 0, gdim=2)
+mesh_partitioner = mesh.create_cell_partitioner(mesh.GhostMode.shared_facet)
+msh, cell_tags, facet_tags = gmshio.model_to_mesh(model, MPI.COMM_WORLD, 0, gdim=2,
+                                                  partitioner=mesh_partitioner)
 
 gmsh.finalize()
 MPI.COMM_WORLD.barrier()