diff --git a/src/slic3r/GUI/AmsMappingPopup.cpp b/src/slic3r/GUI/AmsMappingPopup.cpp
index 2868491d5..6acc69afb 100644
--- a/src/slic3r/GUI/AmsMappingPopup.cpp
+++ b/src/slic3r/GUI/AmsMappingPopup.cpp
@@ -2029,6 +2029,12 @@ void AmsReplaceMaterialDialog::update_mapping_result( std::vector<FilamentInfo>
 {
     m_tray_used.clear();
     for (int i = 0; i < result.size(); i++) {
+
+        if (result[i].tray_id == VIRTUAL_TRAY_MAIN_ID || result[i].tray_id == VIRTUAL_TRAY_DEPUTY_ID)
+        {
+            continue;
+        }
+
         m_tray_used.push_back(wxGetApp().transition_tridid(result[i].tray_id).ToStdString());
     }
 }
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index 21dac7cc8..dceda4c47 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -3992,6 +3992,12 @@ void GUI_App::load_gcode(wxWindow* parent, wxString& input_file) const
 
 wxString GUI_App::transition_tridid(int trid_id) const
 {
+    if (trid_id == VIRTUAL_TRAY_MAIN_ID || trid_id == VIRTUAL_TRAY_DEPUTY_ID)
+    {
+        assert(0);
+        return wxString("Ext");
+    }
+
     wxString maping_dict[] = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z" };
 
     if (trid_id >= 128 * 4) {