diff --git a/src/slic3r/GUI/DeviceManager.cpp b/src/slic3r/GUI/DeviceManager.cpp
index ea8cd32f4..de8b46600 100644
--- a/src/slic3r/GUI/DeviceManager.cpp
+++ b/src/slic3r/GUI/DeviceManager.cpp
@@ -4975,6 +4975,7 @@ void DeviceManager::on_machine_alive(std::string json_str)
             obj->bind_state     = bind_state;
             obj->bind_sec_link  = sec_link;
             obj->dev_connection_name = connection_name;
+            obj->m_is_online = true;
 
             //load access code
             AppConfig* config = Slic3r::GUI::wxGetApp().app_config;