diff --git a/swh/scrubber/__init__.py b/swh/scrubber/__init__.py
--- a/swh/scrubber/__init__.py
+++ b/swh/scrubber/__init__.py
@@ -8,14 +8,16 @@
 from typing import TYPE_CHECKING
 
 if TYPE_CHECKING:
-    from .db import ScrubberDb
+    from swh.scrubber.db import ScrubberDb
 
 
 def get_scrubber_db(cls: str, **kwargs) -> ScrubberDb:
-    if cls != "local":
-        raise ValueError(f"Unknown scrubber db class '{cls}', use 'local' instead.")
+    if cls not in ("local", "postgresql"):
+        raise ValueError(
+            f"Unknown scrubber db class '{cls}', use 'postgresql' instead."
+        )
 
-    from .db import ScrubberDb
+    from swh.scrubber.db import ScrubberDb
 
     return ScrubberDb.connect(kwargs.pop("db"), **kwargs)
 
diff --git a/swh/scrubber/tests/test_cli.py b/swh/scrubber/tests/test_cli.py
--- a/swh/scrubber/tests/test_cli.py
+++ b/swh/scrubber/tests/test_cli.py
@@ -25,7 +25,7 @@
     runner = CliRunner()
 
     config = {
-        "scrubber_db": {"cls": "local", "db": scrubber_db.conn.dsn},
+        "scrubber_db": {"cls": "postgresql", "db": scrubber_db.conn.dsn},
         "graph": {"url": "http://graph.example.org:5009/"},
     }
     if storage:
@@ -72,7 +72,7 @@
     assert result.exit_code == 0, result.output
     assert result.output == ""
 
-    get_scrubber_db.assert_called_once_with(cls="local", db=scrubber_db.conn.dsn)
+    get_scrubber_db.assert_called_once_with(cls="postgresql", db=scrubber_db.conn.dsn)
     StorageChecker.assert_called_once_with(
         db=scrubber_db,
         storage=StorageChecker.mock_calls[0][2]["storage"],
@@ -103,7 +103,7 @@
     assert result.exit_code == 0, result.output
     assert result.output == ""
 
-    get_scrubber_db.assert_called_once_with(cls="local", db=scrubber_db.conn.dsn)
+    get_scrubber_db.assert_called_once_with(cls="postgresql", db=scrubber_db.conn.dsn)
     JournalChecker.assert_called_once_with(
         db=scrubber_db,
         journal_client={
@@ -129,7 +129,7 @@
     assert result.exit_code == 0, result.output
     assert result.output == ""
 
-    get_scrubber_db.assert_called_once_with(cls="local", db=scrubber_db.conn.dsn)
+    get_scrubber_db.assert_called_once_with(cls="postgresql", db=scrubber_db.conn.dsn)
     OriginLocator.assert_called_once_with(
         db=scrubber_db,
         storage=OriginLocator.mock_calls[0][2]["storage"],
@@ -150,7 +150,7 @@
     assert result.exit_code == 0, result.output
     assert result.output == ""
 
-    get_scrubber_db.assert_called_once_with(cls="local", db=scrubber_db.conn.dsn)
+    get_scrubber_db.assert_called_once_with(cls="postgresql", db=scrubber_db.conn.dsn)
     Fixer.assert_called_once_with(
         db=scrubber_db,
         start_object=CoreSWHID.from_string("swh:1:cnt:" + "00" * 20),
diff --git a/swh/scrubber/tests/test_init.py b/swh/scrubber/tests/test_init.py
new file mode 100644
--- /dev/null
+++ b/swh/scrubber/tests/test_init.py
@@ -0,0 +1,33 @@
+# Copyright (C) 2020-2022  The Software Heritage developers
+# See the AUTHORS file at the top-level directory of this distribution
+# License: GNU General Public License version 3, or any later version
+# See top-level LICENSE file for more information
+
+from typing import Any
+
+import pytest
+
+from swh.scrubber import get_scrubber_db
+
+
+@pytest.mark.parametrize("clz", ["local", "postgresql"])
+def test_get_scrubber_db(mocker, clz):
+    mock_scrubber = mocker.patch("swh.scrubber.db.ScrubberDb")
+
+    def test_connect(db_str: str, **kwargs) -> Any:
+        return "connection-result"
+
+    mock_scrubber.connect.side_effect = test_connect
+
+    actual_result = get_scrubber_db(clz, db="service=scrubber-db")
+
+    assert mock_scrubber.connect.called is True
+    assert actual_result == "connection-result"
+
+
+@pytest.mark.parametrize("clz", ["something", "anything"])
+def test_get_scrubber_db_raise(clz):
+    assert clz not in ["local", "postgresql"]
+
+    with pytest.raises(ValueError, match="Unknown"):
+        get_scrubber_db(clz, db="service=scrubber-db")