diff --git a/addons/sale_stock/models/sale_order.py b/addons/sale_stock/models/sale_order.py
index 3917e2782de..486c022d14c 100644
--- a/addons/sale_stock/models/sale_order.py
+++ b/addons/sale_stock/models/sale_order.py
@@ -163,7 +163,10 @@ class SaleOrderLine(models.Model):
             return {}
         if self.product_id.type == 'product':
             precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
-            product = self.product_id.with_context(warehouse=self.order_id.warehouse_id.id)
+            product = self.product_id.with_context(
+                warehouse=self.order_id.warehouse_id.id,
+                lang=self.order_id.partner_id.lang or self.env.user.lang or 'en_US'
+            )
             product_qty = self.product_uom._compute_quantity(self.product_uom_qty, self.product_id.uom_id)
             if float_compare(product.virtual_available, product_qty, precision_digits=precision) == -1:
                 is_available = self._check_routing()