diff --git a/hub/exports/building_energy/idf.py b/hub/exports/building_energy/idf.py
index 5641a600..3480d803 100644
--- a/hub/exports/building_energy/idf.py
+++ b/hub/exports/building_energy/idf.py
@@ -514,7 +514,7 @@ class Idf:
     for building in self._city.buildings:
       for internal_zone in building.internal_zones:
         if internal_zone.thermal_zones_from_internal_zones is None:
-          self._add_shading(building)  # if the building has no archetype use it as shadow object
+          self._target_buildings.remove(building.name)
           continue
         for thermal_zone in internal_zone.thermal_zones_from_internal_zones:
           for thermal_boundary in thermal_zone.thermal_boundaries: