diff --git a/src/ifcopenshell-python/ifcopenshell/api/geometry/add_wall_representation.py b/src/ifcopenshell-python/ifcopenshell/api/geometry/add_wall_representation.py
index 36691a044b..426a097589 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/geometry/add_wall_representation.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/geometry/add_wall_representation.py
@@ -84,7 +84,6 @@ class Usecase:
     def create_item(self) -> ifcopenshell.entity_instance:
         length = self.convert_si_to_unit(self.settings["length"])
         thickness = self.convert_si_to_unit(self.settings["thickness"])
-        thickness *= 1 / cos(self.settings["x_angle"])
         if self.settings["direction_sense"] == "NEGATIVE":
             thickness *= -1
         points = (