diff --git a/tests/integration/new_relations/test_new_relations.py b/tests/integration/new_relations/test_new_relations.py
index d96727556b..09cf292805 100644
--- a/tests/integration/new_relations/test_new_relations.py
+++ b/tests/integration/new_relations/test_new_relations.py
@@ -220,7 +220,7 @@ async def test_filter_out_degraded_replicas(ops_test: OpsTest):
             assert data is None
 
     await start_machine(ops_test, machine)
-    await ops_test.model.wait_for_idle(apps=DATABASE_APP_NAME, status="active", timeout=200)
+    await ops_test.model.wait_for_idle(apps=[DATABASE_APP_NAME], status="active", timeout=200)
 
 
 @pytest.mark.group("new_relations_tests")