diff --git a/addons/stock/models/stock_picking.py b/addons/stock/models/stock_picking.py
index 4442632cdd6..6a50e393f2c 100644
--- a/addons/stock/models/stock_picking.py
+++ b/addons/stock/models/stock_picking.py
@@ -1075,7 +1075,7 @@ class Picking(models.Model):
             lines = self.move_ids.filtered(lambda m: m.product_id.type == 'product' and m.state != 'cancel' and m.quantity_done and not m.move_dest_ids)
             if lines:
                 # don't show reception report if all already assigned/nothing to assign
-                wh_location_ids = self.env['stock.location']._search([('id', 'child_of', self.picking_type_id.warehouse_id.view_location_id.id), ('usage', '!=', 'supplier')])
+                wh_location_ids = self.env['stock.location']._search([('id', 'child_of', self.picking_type_id.warehouse_id.view_location_id.ids), ('usage', '!=', 'supplier')])
                 if self.env['stock.move'].search([
                         ('state', 'in', ['confirmed', 'partially_available', 'waiting', 'assigned']),
                         ('product_qty', '>', 0),