diff --git a/tests/hermes_cli/test_config.py b/tests/hermes_cli/test_config.py
index ca2aedfd69..8dc3ea4274 100644
--- a/tests/hermes_cli/test_config.py
+++ b/tests/hermes_cli/test_config.py
@@ -1938,3 +1938,6 @@ def test_gateway_multiplex_keys_are_recognized_config_keys():
     assert _validate_config_key("gateway.multiplex_profiles") == (True, None)
     assert _validate_config_key("gateway.profile_routes") == (True, None)
     assert _validate_config_key("gateway.auto_multiplex_migration") == (True, None)
+    known, suggestion = _validate_config_key("gateway.auto_migrate")
+    assert known is False
+    assert suggestion == "gateway.auto_multiplex_migration"