diff --git a/DeviceListModel.cpp b/DeviceListModel.cpp
index 4f854ab..fd852f9 100644
--- a/DeviceListModel.cpp
+++ b/DeviceListModel.cpp
@@ -139,6 +139,8 @@ void DeviceListModel::startSearchDevice() {
         emit searchProgressChanged();
         m_timerId = startTimer(1000);
         emit isSearchingChanged();
+    } else {
+        LOG(warning) << "cannot creat udp sockets.";
     }
 }