diff --git a/addons/stock_account/models/product.py b/addons/stock_account/models/product.py
index 6707c437c68..bb04c02903d 100644
--- a/addons/stock_account/models/product.py
+++ b/addons/stock_account/models/product.py
@@ -201,8 +201,8 @@ class ProductProduct(models.Model):
     @api.model
     def _get_anglo_saxon_price_unit(self, uom=False):
         price = self.standard_price
-        if not uom or self.uom_id.id == uom.id:
-            return price
+        if not self or not uom or self.uom_id.id == uom.id:
+            return price or 0.0
         return self.uom_id._compute_price(price, uom)