diff --git a/city_model_structure/thermal_zone.py b/city_model_structure/thermal_zone.py
index 5c3638c9..f8ca8242 100644
--- a/city_model_structure/thermal_zone.py
+++ b/city_model_structure/thermal_zone.py
@@ -76,6 +76,7 @@ class ThermalZone:
 
   @property
   def surfaces(self) -> List[Surface]:
+    # todo: This property should be erased
     """
     Get thermal zone surfaces
     :return: [Surface]