diff --git a/src/slic3r/GUI/MainFrame.cpp b/src/slic3r/GUI/MainFrame.cpp
index 3f000e332..ce8772eed 100644
--- a/src/slic3r/GUI/MainFrame.cpp
+++ b/src/slic3r/GUI/MainFrame.cpp
@@ -434,6 +434,10 @@ void MainFrame::shutdown()
         // restore sidebar if it was hidden when switching to gcode viewer mode
         if (m_restore_from_gcode_viewer.collapsed_sidebar)
             m_plater->collapse_sidebar(false);
+
+        // restore sla printer if it was deselected when switching to gcode viewer mode
+        if (m_restore_from_gcode_viewer.sla_technology)
+            m_plater->set_printer_technology(ptSLA);
 #endif // ENABLE_GCODE_VIEWER
         // Stop the background thread (Windows and Linux).
         // Disconnect from a 3DConnextion driver (OSX).
@@ -1010,8 +1014,7 @@ void MainFrame::init_menubar()
                     wxMessageDialog((wxWindow*)this, _L("Switching to G-code preview mode will remove all objects, continue?"),
                         wxString(SLIC3R_APP_NAME) + " - " + _L("Switch to G-code preview mode"), wxYES_NO | wxYES_DEFAULT | wxICON_QUESTION | wxCENTRE).ShowModal() == wxID_YES)
                     set_mode(EMode::GCodeViewer);
-            }, "", nullptr,
-            [this]() { return m_plater != nullptr && m_plater->printer_technology() != ptSLA; }, this);
+            }, "", nullptr);
 #endif // ENABLE_GCODE_VIEWER
         fileMenu->AppendSeparator();
         append_menu_item(fileMenu, wxID_EXIT, _L("&Quit"), wxString::Format(_L("Quit %s"), SLIC3R_APP_NAME),
@@ -1329,6 +1332,12 @@ void MainFrame::set_mode(EMode mode)
         m_plater->clear_undo_redo_stack_main();
         m_plater->take_snapshot(_L("New Project"));
 
+        // restore sla printer if it was deselected when switching to gcode viewer mode
+        if (m_restore_from_gcode_viewer.sla_technology) {
+            m_plater->set_printer_technology(ptSLA);
+            m_restore_from_gcode_viewer.sla_technology = false;
+        }
+
         // switch view
         m_plater->select_view_3D("3D");
         m_plater->select_view("iso");
@@ -1371,6 +1380,9 @@ void MainFrame::set_mode(EMode mode)
         m_plater->clear_undo_redo_stack_main();
         m_plater->take_snapshot(_L("New Project"));
 
+        // switch to FFF printer mode
+        m_restore_from_gcode_viewer.sla_technology = m_plater->set_printer_technology(ptFFF);
+
         // switch view
         m_plater->select_view_3D("Preview");
         m_plater->select_view("iso");
diff --git a/src/slic3r/GUI/MainFrame.hpp b/src/slic3r/GUI/MainFrame.hpp
index 8961ad717..53d848876 100644
--- a/src/slic3r/GUI/MainFrame.hpp
+++ b/src/slic3r/GUI/MainFrame.hpp
@@ -76,6 +76,7 @@ class MainFrame : public DPIFrame
     {
         bool collapsed_sidebar{ false };
         bool collapse_toolbar_enabled{ false };
+        bool sla_technology{ false };
     };
 
     RestoreFromGCodeViewer m_restore_from_gcode_viewer;
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 97372b247..1fe32fd2d 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -5596,12 +5596,23 @@ PrinterTechnology Plater::printer_technology() const
 
 const DynamicPrintConfig * Plater::config() const { return p->config; }
 
+#if ENABLE_GCODE_VIEWER
+bool Plater::set_printer_technology(PrinterTechnology printer_technology)
+#else
 void Plater::set_printer_technology(PrinterTechnology printer_technology)
+#endif // ENABLE_GCODE_VIEWER
 {
     p->printer_technology = printer_technology;
+#if ENABLE_GCODE_VIEWER
+    bool ret = p->background_process.select_technology(printer_technology);
+    if (ret) {
+        // Update the active presets.
+    }
+#else
     if (p->background_process.select_technology(printer_technology)) {
         // Update the active presets.
     }
+#endif // ENABLE_GCODE_VIEWER
     //FIXME for SLA synchronize
     //p->background_process.apply(Model)!
 
@@ -5618,6 +5629,10 @@ void Plater::set_printer_technology(PrinterTechnology printer_technology)
     p->update_main_toolbar_tooltips();
 
     p->sidebar->get_searcher().set_printer_technology(printer_technology);
+
+#if ENABLE_GCODE_VIEWER
+    return ret;
+#endif // ENABLE_GCODE_VIEWER
 }
 
 void Plater::changed_object(int obj_idx)
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index 9c1270bce..cc8018620 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -263,7 +263,11 @@ public:
 
     PrinterTechnology   printer_technology() const;
     const DynamicPrintConfig * config() const;
+#if ENABLE_GCODE_VIEWER
+    bool                set_printer_technology(PrinterTechnology printer_technology);
+#else
     void                set_printer_technology(PrinterTechnology printer_technology);
+#endif // ENABLE_GCODE_VIEWER
 
     void copy_selection_to_clipboard();
     void paste_from_clipboard();