diff --git a/addons/sale_stock/models/sale_order.py b/addons/sale_stock/models/sale_order.py
index 6a7f809214b..495a691061e 100644
--- a/addons/sale_stock/models/sale_order.py
+++ b/addons/sale_stock/models/sale_order.py
@@ -372,7 +372,7 @@ class SaleOrderLine(models.Model):
         # compute
         precision = self.env['decimal.precision'].precision_get('Product Unit of Measure')
         for so_line in self:
-            if any(move.state == 'done' for move in so_line.move_ids):
+            if any(move.state == 'done' for move in so_line.move_ids) or not so_line.move_ids.picking_id:
                 qty_delivered = float_repr(so_line.qty_delivered, precision)
                 so_line.json_forecast = json.dumps({'reservedAvailability': qty_delivered})
             else: