diff --git a/swh/storage/pytest_plugin.py b/swh/storage/pytest_plugin.py
--- a/swh/storage/pytest_plugin.py
+++ b/swh/storage/pytest_plugin.py
@@ -23,25 +23,6 @@
 DUMP_FILES = path.join(SQL_DIR, "*.sql")
 
 
-@pytest.fixture
-def swh_storage_backend_config(swh_storage_postgresql):
-    """Basic pg storage configuration with no journal collaborator
-    (to avoid pulling optional dependency on clients of this fixture)
-
-    """
-    yield {
-        "cls": "local",
-        "db": swh_storage_postgresql.dsn,
-        "objstorage": {"cls": "memory", "args": {}},
-        "check_config": {"check_write": True},
-    }
-
-
-@pytest.fixture
-def swh_storage(swh_storage_backend_config):
-    return get_storage(**swh_storage_backend_config)
-
-
 # the postgres_fact factory fixture below is mostly a copy of the code
 # from pytest-postgresql. We need a custom version here to be able to
 # specify our version of the DBJanitor we use.
@@ -90,6 +71,25 @@
 swh_storage_postgresql = postgresql_fact("postgresql_proc", db_name="storage")
 
 
+@pytest.fixture
+def swh_storage_backend_config(swh_storage_postgresql):
+    """Basic pg storage configuration with no journal collaborator
+    (to avoid pulling optional dependency on clients of this fixture)
+
+    """
+    yield {
+        "cls": "local",
+        "db": swh_storage_postgresql.dsn,
+        "objstorage": {"cls": "memory", "args": {}},
+        "check_config": {"check_write": True},
+    }
+
+
+@pytest.fixture
+def swh_storage(swh_storage_backend_config):
+    return get_storage(**swh_storage_backend_config)
+
+
 # This version of the DatabaseJanitor implement a different setup/teardown
 # behavior than than the stock one: instead of dropping, creating and
 # initializing the database for each test, it create and initialize the db only