diff --git a/product/ERP5/Document/TransformedResource.py b/product/ERP5/Document/TransformedResource.py
index d5fad98c477898680a80de9d0f6377a640bbaebd..c59731d5ba70cd6ccd472258707802fe6b8dca6f 100644
--- a/product/ERP5/Document/TransformedResource.py
+++ b/product/ERP5/Document/TransformedResource.py
@@ -264,25 +264,6 @@ class TransformedResource(Predicate, XMLObject, XMLMatrix, Amount):
         except ValueError:
           error_string += 'Quantity is not a float.'
 
-        # If IAmount specifies that 4 resources are needed, all quantities
-        # need to be multiplicated by 4...
-        context_quantity = None
-        quantity_getter = getattr(context, "getQuantity", None)
-        if quantity_getter is not None:
-          _marker = object()
-          context_quantity = quantity_getter(_marker)
-          if context_quantity is _marker:
-            # XXX Backwards compatibility:
-            # previously, quantity property of the Amount was completely
-            # ignored, and was assumed to be 1.0 . Re-enact this old
-            # behavior (quantity default value is 0.0) to avoid breakages
-            warn("No quantity was defined on the Amount passed to " \
-                 "getAggregatedAmountList, 1.0 was assumed", DeprecationWarning)
-            context_quantity = 1.0
-        else:
-          raise KeyError("No quantity defined on context")
-        quantity *= float(context_quantity)
-
         # Get the variation category list
         variation_category_list_defined_by = None
         variation_category_list = None