diff --git a/datatypes/epc/domain/tests/test_from_site_notes.py b/datatypes/epc/domain/tests/test_from_site_notes.py
index cb69e42d..479c6e4f 100644
--- a/datatypes/epc/domain/tests/test_from_site_notes.py
+++ b/datatypes/epc/domain/tests/test_from_site_notes.py
@@ -384,6 +384,8 @@ class TestFromSiteNotesExample1:
                     )
                 ],
                 has_fixed_air_conditioning=False,
+                cylinder_size="Normal (90-130 litres)",
+                cylinder_insulation_thickness_mm=12,
                 shower_outlets=ShowerOutlets(
                     shower_outlet=ShowerOutlet(shower_outlet_type="Non-Electric Shower"),
                 ),