diff --git a/addons/pos_sale/models/pos_order.py b/addons/pos_sale/models/pos_order.py
index afd3e8fb0ae..3f7652e0ac9 100644
--- a/addons/pos_sale/models/pos_order.py
+++ b/addons/pos_sale/models/pos_order.py
@@ -13,4 +13,4 @@ class PosOrder(models.Model):
     def _compute_currency_rate(self):
         for order in self:
             date_order = order.date_order or fields.Datetime.now()
-            order.currency_rate = self.env['res.currency']._get_conversion_rate(order.pricelist_id.currency_id, order.company_id.currency_id, order.company_id, date_order)
+            order.currency_rate = self.env['res.currency']._get_conversion_rate(order.company_id.currency_id, order.pricelist_id.currency_id, order.company_id, date_order)
diff --git a/addons/sale/models/sale.py b/addons/sale/models/sale.py
index a829e962db5..1f11b98b9b7 100644
--- a/addons/sale/models/sale.py
+++ b/addons/sale/models/sale.py
@@ -208,7 +208,7 @@ class SaleOrder(models.Model):
     @api.depends('pricelist_id', 'date_order', 'company_id')
     def _compute_currency_rate(self):
         for order in self:
-            order.currency_rate = self.env['res.currency']._get_conversion_rate(order.currency_id, order.company_id.currency_id, order.company_id, order.date_order)
+            order.currency_rate = self.env['res.currency']._get_conversion_rate(order.company_id.currency_id, order.currency_id, order.company_id, order.date_order)
 
     def _compute_access_url(self):
         super(SaleOrder, self)._compute_access_url()