diff --git a/tests/iemweb/autoplot/test_extweb_failures.py b/tests/iemweb/autoplot/test_extweb_failures.py
index f3f6957fa..dd7525f68 100644
--- a/tests/iemweb/autoplot/test_extweb_failures.py
+++ b/tests/iemweb/autoplot/test_extweb_failures.py
@@ -9,5 +9,5 @@ def test_ap17(httpx_mock: HTTPXMock):
     """Test a failure found in prod."""
     httpx_mock.add_response(status_code=404)
     c = Client(application)
-    res = c.get("?p=17&_cb=1")
+    res = c.get("?p=17&q=_cb:1")
     assert res.status_code == 400