diff --git a/backend/Property.py b/backend/Property.py
index 82695b75..c9cad22f 100644
--- a/backend/Property.py
+++ b/backend/Property.py
@@ -83,7 +83,7 @@ class Property:
             "co2_emissions": epc_record.get("co2_emissions_current"),
         }
         self.ventilation = {
-            "ventilation": epc_record.prepared_epc.get("mechanical_ventilation"),
+            "ventilation": epc_record.get("mechanical_ventilation"),
         }
         self.solar_pv = {
             "solar_pv": epc_record.get("photo_supply"),