diff --git a/networkdetector/devicemonitor.cpp b/networkdetector/devicemonitor.cpp
index db0eba3c..3c37976b 100644
--- a/networkdetector/devicemonitor.cpp
+++ b/networkdetector/devicemonitor.cpp
@@ -61,7 +61,7 @@ void DeviceMonitor::ping()
         return;
     }
 
-    m_pingProcess->start("arping", {"-I", targetInterface.name(), "-f", "-w", "90", m_host->address()});
+    m_pingProcess->start("arping", {"-I", targetInterface.name(), "-f", "-w", "180", m_host->address()});
 }
 
 void DeviceMonitor::arpLookupFinished(int exitCode)
diff --git a/networkdetector/devicepluginnetworkdetector.cpp b/networkdetector/devicepluginnetworkdetector.cpp
index 605bba18..b4733afa 100644
--- a/networkdetector/devicepluginnetworkdetector.cpp
+++ b/networkdetector/devicepluginnetworkdetector.cpp
@@ -163,5 +163,8 @@ void DevicePluginNetworkDetector::deviceSeen()
 {
     DeviceMonitor *monitor = static_cast<DeviceMonitor*>(sender());
     Device *device = m_monitors.value(monitor);
-    device->setStateValue(networkDeviceLastSeenTimeStateTypeId, QDateTime::currentDateTime().toTime_t());
+    QDateTime oldLastSeen = QDateTime::fromTime_t(device->stateValue(networkDeviceLastSeenTimeStateTypeId).toInt());
+    if (oldLastSeen.addSecs(60) < QDateTime::currentDateTime()) {
+        device->setStateValue(networkDeviceLastSeenTimeStateTypeId, QDateTime::currentDateTime().toTime_t());
+    }
 }