diff --git a/server/migrations/versions/f819277e5169_audio_location.py b/server/migrations/versions/f819277e5169_audio_location.py
index 576b02bd..061abec4 100644
--- a/server/migrations/versions/f819277e5169_audio_location.py
+++ b/server/migrations/versions/f819277e5169_audio_location.py
@@ -31,13 +31,5 @@ def upgrade() -> None:
 
 def downgrade() -> None:
     # ### commands auto generated by Alembic - please adjust! ###
-    op.add_column(
-        "transcript",
-        sa.Column(
-            "share_mode",
-            sa.VARCHAR(),
-            server_default=sa.text("'private'"),
-            nullable=False,
-        ),
-    )
+    op.drop_column("transcript", "audio_location")
     # ### end Alembic commands ###
diff --git a/server/tests/conftest.py b/server/tests/conftest.py
index aafca9fd..aaf42884 100644
--- a/server/tests/conftest.py
+++ b/server/tests/conftest.py
@@ -133,4 +133,10 @@ def celery_enable_logging():
 
 @pytest.fixture(scope="session")
 def celery_config():
-    return {"broker_url": "memory://", "result_backend": "rpc"}
+    import tempfile
+
+    with tempfile.NamedTemporaryFile() as fd:
+        yield {
+            "broker_url": "memory://",
+            "result_backend": "db+sqlite://" + fd.name,
+        }