diff --git a/swh/loader/tar/tasks.py b/swh/loader/tar/tasks.py
--- a/swh/loader/tar/tasks.py
+++ b/swh/loader/tar/tasks.py
@@ -3,24 +3,15 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-from swh.scheduler.task import Task
+from celery import current_app as app
 
 from swh.loader.tar.loader import RemoteTarLoader
 
 
-class LoadTarRepository(Task):
+@app.task(name=__name__ + '.LoadTarRepository')
+def load_tar(origin, visit_date, last_modified):
     """Import a remote or local archive to Software Heritage
-
     """
-    task_queue = 'swh_loader_tar'
-
-    def run_task(self, *, origin, visit_date, last_modified):
-        """Import a tarball into swh.
-
-        Args: see :func:`TarLoader.prepare`.
-
-        """
-        loader = RemoteTarLoader()
-        loader.log = self.log
-        return loader.load(
-            origin=origin, visit_date=visit_date, last_modified=last_modified)
+    loader = RemoteTarLoader()
+    return loader.load(
+        origin=origin, visit_date=visit_date, last_modified=last_modified)
diff --git a/swh/loader/tar/tests/conftest.py b/swh/loader/tar/tests/conftest.py
new file mode 100644
--- /dev/null
+++ b/swh/loader/tar/tests/conftest.py
@@ -0,0 +1,10 @@
+import pytest
+
+from swh.scheduler.tests.conftest import *  # noqa
+
+
+@pytest.fixture(scope='session')
+def celery_includes():
+    return [
+        'swh.loader.tar.tasks',
+    ]
diff --git a/swh/loader/tar/tests/test_tasks.py b/swh/loader/tar/tests/test_tasks.py
--- a/swh/loader/tar/tests/test_tasks.py
+++ b/swh/loader/tar/tests/test_tasks.py
@@ -3,29 +3,25 @@
 # License: GNU General Public License version 3, or any later version
 # See top-level LICENSE file for more information
 
-import unittest
 from unittest.mock import patch
 
-from swh.loader.tar.tasks import LoadTarRepository
 
+@patch('swh.loader.tar.loader.RemoteTarLoader.load')
+def test_tar_loader_task(mock_loader, swh_app, celery_session_worker):
+    mock_loader.return_value = {'status': 'eventful'}
 
-class TestTasks(unittest.TestCase):
-    def test_check_task_name(self):
-        task = LoadTarRepository()
-        self.assertEqual(task.task_queue, 'swh_loader_tar')
+    res = swh_app.send_task(
+        'swh.loader.tar.tasks.LoadTarRepository',
+        ('origin', 'visit_date', 'last_modified'))
+    assert res
+    res.wait()
+    assert res.successful()
 
-    @patch('swh.loader.tar.loader.RemoteTarLoader.load')
-    def test_task(self, mock_loader):
-        mock_loader.return_value = {'status': 'eventful'}
-        task = LoadTarRepository()
+    # given
+    actual_result = res.result
 
-        # given
-        actual_result = task.run_task(
-            origin='origin', visit_date='visit_date',
-            last_modified='last_modified')
+    assert actual_result == {'status': 'eventful'}
 
-        self.assertEqual(actual_result, {'status': 'eventful'})
-
-        mock_loader.assert_called_once_with(
-            origin='origin', visit_date='visit_date',
-            last_modified='last_modified')
+    mock_loader.assert_called_once_with(
+        origin='origin', visit_date='visit_date',
+        last_modified='last_modified')