diff --git a/addons/sale_stock/models/sale_order.py b/addons/sale_stock/models/sale_order.py
index d4a5ca3ed9d..8a2c383501a 100644
--- a/addons/sale_stock/models/sale_order.py
+++ b/addons/sale_stock/models/sale_order.py
@@ -87,7 +87,7 @@ class SaleOrder(models.Model):
     def action_cancel(self):
         documents = None
         for sale_order in self:
-            if sale_order.state == 'sale':
+            if sale_order.state == 'sale' and sale_order.order_line:
                 sale_order_lines_quantities = {order_line: (order_line.product_uom_qty, 0) for order_line in sale_order.order_line}
                 documents = self.env['stock.picking']._log_activity_get_documents(sale_order_lines_quantities, 'move_ids', 'UP')
         self.mapped('picking_ids').action_cancel()