diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 389ff3dbb8..e35723912b 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -383,6 +383,8 @@ static void add_tabs_as_menu(wxMenuBar* bar, MainFrame* main_frame, wxWindow* ba
 
 void MainFrame::show_tabs_menu(bool show)
 {
+    if (!m_menubar)
+        return;
     if (show)
         append_tab_menu_items_to_menubar(m_menubar, plater() ? plater()->printer_technology() : ptFFF, true);
     else
@@ -2192,6 +2194,8 @@ void MainFrame::add_to_recent_projects(const wxString& filename)
 
 void MainFrame::technology_changed()
 {
+    if (!m_menubar)
+        return;
     // update menu titles
     PrinterTechnology pt = plater()->printer_technology();
     if (int id = m_menubar->FindMenu(pt == ptFFF ? _L("Material Settings") : _L("Filament Settings")); id != wxNOT_FOUND)