diff --git a/doc/source/tutorials/RhO/RhO.py b/doc/source/tutorials/RhO/RhO.py
index 90c8e46..0817b27 100644
--- a/doc/source/tutorials/RhO/RhO.py
+++ b/doc/source/tutorials/RhO/RhO.py
@@ -18,7 +18,8 @@ for zi, z0 in enumerate(all_z):
     calc.set_atoms(cluster)
 
     # Compute
-    data = calc.get_theta_phi_scan(level='1s', kinetic_energy=723, data=data)
+    data = calc.get_theta_phi_scan(level='1s', kinetic_energy=723, data=data,
+                                   malloc={'NPH_M': 8000})
     dset = data[-1]
     dset.title = "{:d}) z = {:.2f} angstroms".format(zi, z0)