diff --git a/modules/purchase_trade/valuation.py b/modules/purchase_trade/valuation.py
index 35f4184..6ea8df4 100644
--- a/modules/purchase_trade/valuation.py
+++ b/modules/purchase_trade/valuation.py
@@ -43,14 +43,14 @@ class ValuationBase(ModelSQL):
     counterparty = fields.Many2One('party.party',"Counterparty")
     product = fields.Many2One('product.product',"Product")
     state = fields.Char("State")
-    price = fields.Numeric("Price",digits='unit')
+    price = fields.Numeric("Price",digits=(16,4))
     currency = fields.Many2One('currency.currency',"Cur")
-    quantity = fields.Numeric("Quantity",digits='unit')
+    quantity = fields.Numeric("Quantity",digits=(16,5))
     unit = fields.Many2One('product.uom',"Unit")
-    amount = fields.Numeric("Amount",digits='unit')
-    mtm = fields.Numeric("Mtm",digits='unit')
+    amount = fields.Numeric("Amount",digits=(16,2))
+    mtm = fields.Numeric("Mtm",digits=(16,2))
     lot = fields.Many2One('lot.lot',"Lot")
-    base_amount = fields.Numeric("Base Amount",digits='unit')
+    base_amount = fields.Numeric("Base Amount",digits=(16,2))
     rate = fields.Numeric("Rate", digits=(16,6))
 
     @classmethod