diff --git a/src/agent_tools/web_tools.py b/src/agent_tools/web_tools.py
index fe33e2da0..007717bb5 100644
--- a/src/agent_tools/web_tools.py
+++ b/src/agent_tools/web_tools.py
@@ -2708,8 +2708,7 @@ async def shutdown_private_browser_sessions() -> None:
         _ACTIVE_BROWSER_SESSIONS.discard(session)
     from src.browser_identity import _REGISTRY
     for record in tuple(_REGISTRY.values()):
-        session = record.session
-        if session is not None and session.observation.daemon.owned():
+        if record.env and "AGENT_BROWSER_SOCKET_DIR" in record.env:
             browser_lifecycle.force_cleanup(Path(record.env["AGENT_BROWSER_SOCKET_DIR"]), record.key,
                 method="shutdown", pid_alive=lambda pid: _process_is_alive(pid))
         record.invalidate()
diff --git a/tests/test_private_browser_tool.py b/tests/test_private_browser_tool.py
index 2c5ecc315..37d9856d6 100644
--- a/tests/test_private_browser_tool.py
+++ b/tests/test_private_browser_tool.py
@@ -746,3 +746,31 @@ def test_liveness_probe_goes_through_the_platform_safe_helper(monkeypatch) -> No
 
     assert web_tools._process_is_alive(4242) is True
     assert asked == [4242]
+
+
+@pytest.mark.asyncio
+async def test_shutdown_cleans_up_invalidated_registered_browser_session(monkeypatch) -> None:
+    """Shutdown cleanup must terminate owned daemons even if record.session was invalidated."""
+    from unittest.mock import MagicMock
+    from src import browser_identity as browser
+
+    cleaned: list[tuple[Path, str]] = []
+    def fake_force_cleanup(root, key, **kwargs):
+        cleaned.append((Path(root), key))
+
+    monkeypatch.setattr("src.browser_lifecycle.force_cleanup", fake_force_cleanup)
+
+    record = MagicMock()
+    record.key = "ody-test1234"
+    record.env = {"AGENT_BROWSER_SOCKET_DIR": "/tmp/test-socket-dir"}
+    record.session = None  # Simulates cancellation / invalidate()
+    record.invalidate = MagicMock()
+
+    monkeypatch.setattr(browser, "_REGISTRY", {("alice", "thread"): record})
+
+    await shutdown_private_browser_sessions()
+
+    assert cleaned == [(Path("/tmp/test-socket-dir"), "ody-test1234")]
+    assert browser._REGISTRY == {}
+    record.invalidate.assert_called_once()
+