diff --git a/src/slic3r/GUI/Monitor.cpp b/src/slic3r/GUI/Monitor.cpp
index b4484388c..3de9fb909 100644
--- a/src/slic3r/GUI/Monitor.cpp
+++ b/src/slic3r/GUI/Monitor.cpp
@@ -468,7 +468,7 @@ bool MonitorPanel::Show(bool show)
             if (obj == nullptr) {
                 dev->load_last_machine();
                 obj = dev->get_selected_machine();
-                if (obj)
+                if (obj && obj->is_info_ready(false))
                     GUI::wxGetApp().sidebar().load_ams_list(obj->dev_id, obj);
             } else {
                 obj->reset_update_time();