diff --git a/tests/integration/test_meter_checkpoint_c3.py b/tests/integration/test_meter_checkpoint_c3.py
index e035947..a3f6392 100644
--- a/tests/integration/test_meter_checkpoint_c3.py
+++ b/tests/integration/test_meter_checkpoint_c3.py
@@ -215,6 +215,15 @@ def test_c3_alert_close_route_and_dashboard_summaries(app, admin_user, authentic
     assert response.status_code == 302
     with app.app_context():
         assert db.session.get(MeterAlert, alert_id).status == "CLOSED"
+        from app_new.core.models.maintenance import Intervention
+        before = Intervention.query.count()
+        first = authenticated_client.post(f"/planning/meter-alerts/{alert_id}/create-intervention", data={})
+        second = authenticated_client.post(f"/planning/meter-alerts/{alert_id}/create-intervention", data={})
+        after = Intervention.query.count()
+        assert first.status_code == 302 and second.status_code == 302 and after == before + 1
+        created = db.session.get(MeterAlert, alert_id).intervention
+        db.session.delete(created)
+        db.session.commit()
     dashboard = authenticated_client.get("/planning/meter-monitoring")
     assert dashboard.status_code == 200
     assert b"Eau" in dashboard.data and b"m" in dashboard.data