diff --git a/tests/test_zero_amount.py b/tests/test_zero_amount.py
index 8fe7d49..1c3d53e 100644
--- a/tests/test_zero_amount.py
+++ b/tests/test_zero_amount.py
@@ -135,6 +135,6 @@ def test_month_page_renders_paired_zero_widget(client):
     client.post("/month/2026-04/create")
     response = client.get("/month/2026-04")
     assert response.status_code == 200
-    assert "zero-widget-pair" in response.text
+    assert 'id="zero-widget"' in response.text
     assert response.text.count("Planned") >= 1
     assert response.text.count("Applied") >= 1