diff --git a/product/ERP5/Document/TradeCondition.py b/product/ERP5/Document/TradeCondition.py
index 63d4f636283a56e4580081e48bac9577cbe822c7..c2ca25a98434e9d5226dfd5abdccfa6361ac22e8 100644
--- a/product/ERP5/Document/TradeCondition.py
+++ b/product/ERP5/Document/TradeCondition.py
@@ -79,11 +79,6 @@ class TradeCondition(Path, Transformation):
     security.declareProtected(Permissions.ModifyPortalContent,
                               'updateAggregatedAmountList')
     def updateAggregatedAmountList(self, context, **kw):
-      '''
-        updates exisiting movement and returns new if any
-        return a dict of list of movement 'movement_to_add_list' and
-        'movement_to_delete_list'
-      '''
       existing_movement_list = context.getMovementList()
       aggregated_amount_list = self.getAggregatedAmountList(context=context,
           **kw)
@@ -128,9 +123,10 @@ class TradeCondition(Path, Transformation):
         'findSpecialiseValueList')
     def findSpecialiseValueList(self, context, portal_type_list=None,
         visited_trade_condition_list=None):
-      '''Return a list of object. The list will represent the inheritance tree.
-      It uses Breadth First Search.
-      '''
+      """Returns a list of specialised objects representing inheritance tree.
+
+         Uses Breadth First Search.
+      """
       if visited_trade_condition_list is None:
         visited_trade_condition_list = []
       specialise_value_list = []
@@ -151,8 +147,8 @@ class TradeCondition(Path, Transformation):
     security.declareProtected(Permissions.AccessContentsInformation,
                               'getTradeModelLineComposedList')
     def getTradeModelLineComposedList(self, context=None, portal_type_list=None):
-      """
-      Returns list of Trade Model Lines using composition
+      """Returns list of Trade Model Lines using composition.
+
       Reference of Trade Model Line is used to hide other Trade Model Line
       In chain first found Trade Model Line has precedence
       Context's, if not None, Trade Model Lines have precedence
diff --git a/product/ERP5/interfaces/transformation.py b/product/ERP5/interfaces/transformation.py
index 2d2d43b2648d583f8f45515a128b1a5ed4e13b9d..1fe385e526b587666df0ea9eb14a6da288bab615 100644
--- a/product/ERP5/interfaces/transformation.py
+++ b/product/ERP5/interfaces/transformation.py
@@ -54,7 +54,10 @@ class ITransformation(Interface):
     pass
 
   def updateAggregatedAmountList(context):
-    """Updates currently existing movements on delivery
+    """Updates existing movement and returns new or deleted if any.
+
+    Returns a dict of list of movement 'movement_to_add_list' and
+    'movement_to_delete_list'
 
     context - represents object on which update shall happen