diff --git a/frontend/src/pages/DeviceDetail.tsx b/frontend/src/pages/DeviceDetail.tsx
index 034a92d..0830bc3 100644
--- a/frontend/src/pages/DeviceDetail.tsx
+++ b/frontend/src/pages/DeviceDetail.tsx
@@ -25,6 +25,7 @@ import {
   Typography,
   message,
 } from 'antd'
+import { useQueryClient } from '@tanstack/react-query'
 import dayjs from 'dayjs'
 import { useState } from 'react'
 import { useNavigate, useParams } from 'react-router-dom'
@@ -386,6 +387,7 @@ export function DeviceDetailPage() {
   const { data: device, isLoading } = useDevice(objId, deviceId)
   const deleteDevice = useDeleteDevice(objId)
 
+  const qc = useQueryClient()
   const [editOpen, setEditOpen] = useState(false)
   const [activeTab, setActiveTab] = useState('info')
   const [liveStatus, setLiveStatus] = useState<{ status: string; ping_ms: number | null } | null>(null)
@@ -394,6 +396,7 @@ export function DeviceDetailPage() {
     onDeviceStatus: (ev) => {
       if (ev.device_id === deviceId) {
         setLiveStatus({ status: ev.status, ping_ms: ev.ping_ms })
+        qc.invalidateQueries({ queryKey: ['device', objId, deviceId] })
       }
     },
   })
diff --git a/frontend/src/pages/ObjectDetail.tsx b/frontend/src/pages/ObjectDetail.tsx
index bf703ac..108c1fd 100644
--- a/frontend/src/pages/ObjectDetail.tsx
+++ b/frontend/src/pages/ObjectDetail.tsx
@@ -457,7 +457,7 @@ export function ObjectDetailPage({ defaultMode = 'inventory' }: { defaultMode?:
           ? <Tooltip title="Мониторинг включен"><span style={{ color: '#faad14' }}>⟳</span></Tooltip>
           : null
 
-        const showLastSeen = d.status !== 'online' && d.last_seen && d.last_ping_at !== d.last_seen
+        const showLastSeen = d.last_seen && d.last_ping_at !== d.last_seen
 
         return (
           <Space size={6} align="start">