diff --git a/src/ifcopenshell-python/ifcopenshell/api/cost/copy_cost_item_values.py b/src/ifcopenshell-python/ifcopenshell/api/cost/copy_cost_item_values.py
index e62b105c50..01d0a02976 100644
--- a/src/ifcopenshell-python/ifcopenshell/api/cost/copy_cost_item_values.py
+++ b/src/ifcopenshell-python/ifcopenshell/api/cost/copy_cost_item_values.py
@@ -51,7 +51,7 @@ def copy_cost_item_values(
         ifcopenshell.api.cost.copy_cost_item_values(model, source=item1, destination=item2)
     """
     for cost_value in destination.CostValues or []:
-        ifcopenshell.api.cost.remove_cost_item_value(file, cost_value=cost_value)
+        ifcopenshell.api.cost.remove_cost_value(file, source, cost_value=cost_value)
     copied_cost_values = []
     for cost_value in source.CostValues or []:
         copied_cost_values.append(ifcopenshell.util.element.copy_deep(file, cost_value))