diff --git a/sale.py b/sale.py
index 75ae548..de3ed16 100644
--- a/sale.py
+++ b/sale.py
@@ -345,8 +345,8 @@ class Line(metaclass=PoolMeta):
         else:
             self.bought_pizza = False
 
-    def get_production(self):
+    def get_production(self, product_quantities ):
         "Return production for the sale line"
-        Production = super(Line, self).get_production()
+        Production = super(Line, self).get_production(product_quantities)
 
         return Production