diff --git a/backend/export/tests/test_export.py b/backend/export/tests/test_export.py
index 7e7ac786..42177749 100644
--- a/backend/export/tests/test_export.py
+++ b/backend/export/tests/test_export.py
@@ -332,7 +332,7 @@ def test_solar_with_battery_example(db_session):
                 "creation_status": "PropertyCreationStatus.READY",
                 "uprn": 100090438731,
                 "landlord_property_id": "BARR052",
-                "building_reference_number": 3460742868.0,
+                "building_reference_number": 3460742868,
                 "status": "PortfolioStatus.ASSESSMENT",
                 "address": "52, Barrack Street",
                 "postcode": "CO1 2LR",