diff --git a/imports/geometry_feeders/citygml.py b/imports/geometry_feeders/citygml.py
index e088a26f..dbbfd8cb 100644
--- a/imports/geometry_feeders/citygml.py
+++ b/imports/geometry_feeders/citygml.py
@@ -158,7 +158,7 @@ class CityGml:
     return [Surface(Polygon(sp),Polygon(sp)) for sp in solid_points]
 
   @staticmethod
-  def _lod2_solid_multi_surface(o,):
+  def _lod2_solid_multi_surface(o):
     if 'boundedBy' in o['Building']['consistsOfBuildingPart']['BuildingPart']:
       if 'RoofSurface' in o['Building']['consistsOfBuildingPart']['BuildingPart']['boundedBy']:
         if o['Building']['consistsOfBuildingPart']['BuildingPart']['boundedBy']['RoofSurface']['lod2MultiSurface'] != 'None':