diff --git a/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py b/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
index a04c2fd2..04350b81 100644
--- a/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
+++ b/hub/city_model_structure/life_cycle_assessment/access_nrcan_catalogue.py
@@ -103,9 +103,9 @@ class AccessNrcanCatalog:
         return opaque_surface[opaque_surface_key]['layers']
 
   def search_transparent_surfaces(
-          self, surface_type, opaque_surface_code, climate_zone):
+          self, surface_type, opaque_surface_code):
     return self.transparent_surfaces[
-      f'{surface_type}_{opaque_surface_code}_{climate_zone}']
+      f'{surface_type}_{opaque_surface_code}']
 
   def find_opaque_surface(self, function, period_of_construction, climate_zone):
     """Returns the opaque_surface_name corresponding to the given arguments."""
diff --git a/hub/city_model_structure/life_cycle_assessment/opening_emission.py b/hub/city_model_structure/life_cycle_assessment/opening_emission.py
index c14eaaf3..dc87893f 100644
--- a/hub/city_model_structure/life_cycle_assessment/opening_emission.py
+++ b/hub/city_model_structure/life_cycle_assessment/opening_emission.py
@@ -22,5 +22,5 @@ class OpeningEmission:
   def opening_surface(self):
     return self._opening_surface
 
-  def opening_emission(self):
+  def calculate_opening_emission(self):
     return self._opening_material_emission * self._opening_surface