diff --git a/tests/hermes_cli/test_dashboard_admin_endpoints.py b/tests/hermes_cli/test_dashboard_admin_endpoints.py
index 3f04e6533f0a2..2f438983d14a6 100644
--- a/tests/hermes_cli/test_dashboard_admin_endpoints.py
+++ b/tests/hermes_cli/test_dashboard_admin_endpoints.py
@@ -1009,3 +1009,27 @@ def test_desktop_lifespan_reaps_orphan_gateways_on_startup(
 
     assert called == [True]
 
+
+def test_desktop_lifespan_terminates_managed_gateway_restart(monkeypatch):
+    """A Desktop-owned gateway child must not survive its serve backend."""
+    import hermes_cli.web_server as ws
+
+    calls = []
+
+    class _FakeRunningProc:
+        def poll(self):
+            return None
+
+        def terminate(self):
+            calls.append("terminate")
+
+    monkeypatch.setenv("HERMES_DESKTOP", "1")
+    monkeypatch.setattr(ws, "_warm_gateway_module", lambda: None)
+    monkeypatch.setattr(ws, "_start_desktop_cron_ticker", lambda *_args: None)
+    monkeypatch.setitem(ws._ACTION_PROCS, "gateway-restart", _FakeRunningProc())
+
+    client, _header = _client()
+    with client:
+        pass
+
+    assert calls == ["terminate"]