diff --git a/asset_list/AssetList.py b/asset_list/AssetList.py
index 5e8ff29c..86b1bf87 100644
--- a/asset_list/AssetList.py
+++ b/asset_list/AssetList.py
@@ -299,7 +299,7 @@ class AssetList:
 
         # Finally, we handle the case where the landlord's property ID is actually the OS UPRN
         if self.landlord_uprn == self.landlord_property_id:
-            self.raw_asset_list[self.STANDARD_UPRN] = self.raw_asset_list[self.landlord_uprn].copy()
+            self.standardised_asset_list[self.STANDARD_UPRN] = self.standardised_asset_list[self.landlord_uprn].copy()
             # Update the reference to landlord UPRn
             self.landlord_uprn = self.STANDARD_UPRN