diff --git a/base_delivery_carrier_label/models/stock_picking.py b/base_delivery_carrier_label/models/stock_picking.py
index 7f0f0fff0c..73143c2008 100644
--- a/base_delivery_carrier_label/models/stock_picking.py
+++ b/base_delivery_carrier_label/models/stock_picking.py
@@ -59,21 +59,8 @@ def attach_shipping_label(self, label):
             self.env["shipping.label"].with_context(**context_attachment).create(data)
         )
 
-    def _set_a_default_package(self):
-        """Pickings using this module must have a package
-        If not this method put it one silently
-        """
-        for picking in self:
-            move_lines = picking.move_line_ids.filtered(
-                lambda s: not s.result_package_id
-            )
-            if move_lines:
-                picking._put_in_pack(move_lines)
-
     def send_to_shipper(self):
         self.ensure_one()
-        if self.env.context.get("set_default_package", True):
-            self._set_a_default_package()
         # We consider that label has already been generated in case we have a
         # carrier tracking ref, this way we may print the labels before shipping
         # and not generated in second time during shipment
diff --git a/base_delivery_carrier_label/readme/CONTRIBUTORS.rst b/base_delivery_carrier_label/readme/CONTRIBUTORS.rst
index b658fd7fb9..8df452dd1a 100644
--- a/base_delivery_carrier_label/readme/CONTRIBUTORS.rst
+++ b/base_delivery_carrier_label/readme/CONTRIBUTORS.rst
@@ -7,3 +7,4 @@
 * Dave Lasley <dave@laslabs.com>
 * Timothée Ringeard <timothee.ringeard@camptocamp.com>
 * Pimolnat Suntian <pimolnats@ecosoft.co.th>
+* Raphaël Reverdy <raphael.reverdy@akretion.com>
diff --git a/delivery_roulier/__manifest__.py b/delivery_roulier/__manifest__.py
index b7a4fbfdfa..f938451d2d 100644
--- a/delivery_roulier/__manifest__.py
+++ b/delivery_roulier/__manifest__.py
@@ -6,7 +6,7 @@
     "version": "16.0.1.0.0",
     "author": "Akretion,Odoo Community Association (OCA)",
     "summary": "Integration of multiple carriers",
-    "maintainers": ["florian-dacosta"],
+    "maintainers": ["florian-dacosta", "hparfr"],
     "category": "Delivery",
     "depends": [
         "base_delivery_carrier_label",
diff --git a/delivery_roulier/models/stock_quant_package.py b/delivery_roulier/models/stock_quant_package.py
index c0fe30c958..c63bd07f34 100644
--- a/delivery_roulier/models/stock_quant_package.py
+++ b/delivery_roulier/models/stock_quant_package.py
@@ -91,6 +91,8 @@ def _parse_response(self, picking, response):
     def _roulier_generate_labels(self, picking):
         # send all packs to roulier. It will decide if it makes one call per pack or
         # one call for all pack depending on the carrier.
+        if not self:
+            raise UserError(_("No pack found for picking %s", picking.name))
         response = self._call_roulier_api(picking)
         self._handle_attachments(picking, response)
         return self._parse_response(picking, response)
diff --git a/delivery_roulier/tests/test_delivery_roulier.py b/delivery_roulier/tests/test_delivery_roulier.py
index c04aab2c50..55069d82e8 100644
--- a/delivery_roulier/tests/test_delivery_roulier.py
+++ b/delivery_roulier/tests/test_delivery_roulier.py
@@ -4,6 +4,7 @@
 from odoo_test_helper import FakeModelLoader
 from roulier import roulier
 
+from odoo.exceptions import UserError
 from odoo.tests.common import TransactionCase
 
 roulier_ret = {
@@ -100,13 +101,33 @@ def tearDownClass(cls):
         roulier.get_carriers_action_available = cls.real_get_carriers_action_available
         super().tearDownClass()
 
+    def test_roulier_no_pack(self):
+        # having a pack is mandatory for roulier
+        # it should fail if no pack provided.
+        # in <16 packs were silently created
+        roulier.get_carriers_action_available = MagicMock(
+            return_value={"test": ["get_label"]}
+        )
+        with patch("roulier.roulier.get") as mock_roulier:
+            mock_roulier.return_value = roulier_ret
+            self.assertRaises(UserError, self.picking.send_to_shipper)
+
     def test_roulier(self):
         roulier.get_carriers_action_available = MagicMock(
             return_value={"test": ["get_label"]}
         )
         with patch("roulier.roulier.get") as mock_roulier:
             mock_roulier.return_value = roulier_ret
+
+            # create pack
+            move_lines = self.picking.move_line_ids.filtered(
+                lambda s: not s.result_package_id
+            )
+            if move_lines:
+                self.picking._put_in_pack(move_lines)
+
             self.picking.send_to_shipper()
+
             roulier_args = mock_roulier.mock_calls[0][1]
             self.assertEqual("get_label", roulier_args[1])
             roulier_payload = roulier_args[2]