diff --git a/addons/purchase_requisition/models/purchase_requisition.py b/addons/purchase_requisition/models/purchase_requisition.py
index 86ad0cc1ca4..6e3749f4e90 100644
--- a/addons/purchase_requisition/models/purchase_requisition.py
+++ b/addons/purchase_requisition/models/purchase_requisition.py
@@ -268,8 +268,8 @@ class PurchaseOrderLine(models.Model):
             for line in self.order_id.requisition_id.line_ids:
                 if line.product_id == self.product_id:
                     if line.product_uom_id != self.product_uom:
-                        self.price_unit = self.env['product.uom']._compute_price(
-                            line.product_uom_id.id, line.price_unit, to_uom_id=self.product_uom.id)
+                        self.price_unit = line.product_uom_id._compute_price(
+                            line.price_unit, self.product_uom)
                     else:
                         self.price_unit = line.price_unit
                     break
diff --git a/addons/sale_margin/models/sale_order.py b/addons/sale_margin/models/sale_order.py
index ee62b277751..63dc3f872f0 100644
--- a/addons/sale_margin/models/sale_order.py
+++ b/addons/sale_margin/models/sale_order.py
@@ -28,7 +28,7 @@ class SaleOrderLine(models.Model):
         to_cur = pricelist.currency_id
         purchase_price = product.standard_price
         if product_uom != product.uom_id:
-            purchase_price = self.env['product.uom']._compute_price(product.uom_id.id, purchase_price, to_uom_id=product_uom.id)
+            purchase_price = product.uom_id._compute_price(purchase_price, product_uom)
         ctx = self.env.context.copy()
         ctx['date'] = date
         price = frm_cur.with_context(ctx).compute(purchase_price, to_cur, round=False)
diff --git a/addons/sale_mrp/sale_mrp.py b/addons/sale_mrp/sale_mrp.py
index bf6fc426f01..c94c0430247 100644
--- a/addons/sale_mrp/sale_mrp.py
+++ b/addons/sale_mrp/sale_mrp.py
@@ -89,5 +89,5 @@ class AccountInvoiceLine(models.Model):
                         prod_quantity = factor * quantity
                         average_price_unit += self._compute_average_price(prod_qty_done, prod_quantity, prod_moves)
                     price_unit = average_price_unit or price_unit
-                    price_unit = self.product_id.uom_id._compute_price(self.product_id.uom_id.id, price_unit, to_uom_id=self.uom_id.id)
+                    price_unit = self.product_id.uom_id._compute_price(price_unit, self.uom_id)
         return price_unit
diff --git a/addons/sale_stock/models/account_invoice.py b/addons/sale_stock/models/account_invoice.py
index 0760d7509b1..96f35cf5424 100644
--- a/addons/sale_stock/models/account_invoice.py
+++ b/addons/sale_stock/models/account_invoice.py
@@ -34,7 +34,7 @@ class AccountInvoiceLine(models.Model):
                 # on the moves we encounter.
                 average_price_unit = self._compute_average_price(qty_done, quantity, moves)
                 price_unit = average_price_unit or price_unit
-                price_unit = self.product_id.uom_id._compute_price(self.product_id.uom_id.id, price_unit, to_uom_id=self.uom_id.id)
+                price_unit = self.product_id.uom_id._compute_price(price_unit, self.uom_id)
         return price_unit
 
     def _compute_average_price(self, qty_done, quantity, moves):
diff --git a/addons/stock_account/models/account_invoice.py b/addons/stock_account/models/account_invoice.py
index 9e64bdb1d34..e6c4d8c135d 100644
--- a/addons/stock_account/models/account_invoice.py
+++ b/addons/stock_account/models/account_invoice.py
@@ -77,7 +77,7 @@ class AccountInvoiceLine(models.Model):
         if not self.uom_id or self.product_id.uom_id == self.uom_id:
             return price
         else:
-            return self.product_id.uom_id._compute_price(self.product_id.uom_id.id, price, to_uom_id=self.uom_id.id)
+            return self.product_id.uom_id._compute_price(price, self.uom_id)
 
     def _get_price(self, company_currency, price_unit):
         if self.invoice_id.currency_id.id != company_currency.id: