diff --git a/product/ERP5/Document/TransformationSourcingRule.py b/product/ERP5/Document/TransformationSourcingRule.py
index 0b5b09df2739217cd0b1761c93d30145a5443f7c..c5bcfe49a4e10f816ee81d760d13d81778c03810 100755
--- a/product/ERP5/Document/TransformationSourcingRule.py
+++ b/product/ERP5/Document/TransformationSourcingRule.py
@@ -106,7 +106,7 @@ class TransformationSourcingRuleMixin(ExtensionClass.Base):
       production_order_line = production_order_movement
     else:
       production_order_line = production_order_movement.getParent()
-    script = production_order_line._getTypeBaseMethod('_getTransformation') 
+    script = production_order_line._getTypeBasedMethod('_getTransformation') 
     if script is not None:
       transformation = script()
     else: