diff --git a/resources/icons/mode_expert_sq.png b/resources/icons/mode_expert_sq.png
new file mode 100644
index 000000000..742ffc088
Binary files /dev/null and b/resources/icons/mode_expert_sq.png differ
diff --git a/resources/icons/mode_middle_sq.png b/resources/icons/mode_middle_sq.png
new file mode 100644
index 000000000..6df2a52fe
Binary files /dev/null and b/resources/icons/mode_middle_sq.png differ
diff --git a/resources/icons/mode_off_sq.png b/resources/icons/mode_off_sq.png
new file mode 100644
index 000000000..8d8185653
Binary files /dev/null and b/resources/icons/mode_off_sq.png differ
diff --git a/resources/icons/mode_simple_sq.png b/resources/icons/mode_simple_sq.png
new file mode 100644
index 000000000..cb8ab7bd4
Binary files /dev/null and b/resources/icons/mode_simple_sq.png differ
diff --git a/src/libslic3r/Config.hpp b/src/libslic3r/Config.hpp
index e0544b153..c521f1cbb 100644
--- a/src/libslic3r/Config.hpp
+++ b/src/libslic3r/Config.hpp
@@ -63,7 +63,7 @@ enum ConfigOptionType {
 };
 
 enum ConfigOptionMode {
-    comSimple,
+    comSimple = 0,
     comAdvanced,
     comExpert
 };
diff --git a/src/slic3r/GUI/GUI_App.cpp b/src/slic3r/GUI/GUI_App.cpp
index ce7ea8bac..b2111c4b1 100644
--- a/src/slic3r/GUI/GUI_App.cpp
+++ b/src/slic3r/GUI/GUI_App.cpp
@@ -556,21 +556,23 @@ Tab* GUI_App::get_tab(Preset::Type type)
     return nullptr;
 }
 
-ConfigMenuIDs GUI_App::get_view_mode()
+ConfigOptionMode GUI_App::get_mode()
 {
     if (!app_config->has("view_mode"))
-        return ConfigMenuModeSimple;
+        return comSimple;
 
     const auto mode = app_config->get("view_mode");
-    return mode == "expert" ? ConfigMenuModeExpert : 
-           mode == "simple" ? ConfigMenuModeSimple : ConfigMenuModeAdvanced;
+    return mode == "expert" ? comExpert : 
+           mode == "simple" ? comSimple : comAdvanced;
 }
 
-ConfigOptionMode GUI_App::get_opt_mode()  {
-    const ConfigMenuIDs mode = wxGetApp().get_view_mode();
-
-    return  mode == ConfigMenuModeSimple ? comSimple :
-            mode == ConfigMenuModeExpert ? comExpert : comAdvanced;
+void GUI_App::save_mode(const /*ConfigOptionMode*/int mode) 
+{
+    const std::string mode_str = mode == comExpert ? "expert" :
+                                 mode == comSimple ? "simple" : "advanced";
+    app_config->set("view_mode", mode_str);
+    app_config->save(); 
+    update_mode();
 }
 
 // Update view mode according to selected menu
@@ -578,13 +580,15 @@ void GUI_App::update_mode()
 {
     wxWindowUpdateLocker noUpdates(&sidebar());
 
-    ConfigMenuIDs mode = wxGetApp().get_view_mode();
+    const ConfigOptionMode mode = wxGetApp().get_mode();
 
-    obj_list()->get_sizer()->Show(mode == ConfigMenuModeExpert);
+    obj_list()->get_sizer()->Show(mode == comExpert);
     sidebar().set_mode_value(mode);
-//    sidebar().show_buttons(mode == ConfigMenuModeExpert);
+//    sidebar().show_buttons(mode == comExpert);
     obj_list()->update_selections();
 
+    sidebar().update_mode_sizer(mode);
+
     sidebar().Layout();
 
     for (auto tab : tabs_list)
@@ -612,7 +616,7 @@ void GUI_App::add_config_menu(wxMenuBar *menu)
     mode_menu->AppendRadioItem(config_id_base + ConfigMenuModeSimple, _(L("Simple")), _(L("Simple View Mode")));
     mode_menu->AppendRadioItem(config_id_base + ConfigMenuModeAdvanced, _(L("Advanced")), _(L("Advanced View Mode")));
     mode_menu->AppendRadioItem(config_id_base + ConfigMenuModeExpert, _(L("Expert")), _(L("Expert View Mode")));
-    mode_menu->Check(config_id_base + get_view_mode(), true);
+    mode_menu->Check(config_id_base + ConfigMenuModeSimple + get_mode(), true);
     local_menu->AppendSubMenu(mode_menu, _(L("Mode")), _(L("Slic3r View Mode")));
     local_menu->AppendSeparator();
     local_menu->Append(config_id_base + ConfigMenuLanguage, _(L("Change Application Language")));
@@ -682,11 +686,7 @@ void GUI_App::add_config_menu(wxMenuBar *menu)
     });
     mode_menu->Bind(wxEVT_MENU, [this, config_id_base](wxEvent& event) {
         int id_mode = event.GetId() - config_id_base;
-        std::string mode = id_mode == ConfigMenuModeExpert ? "expert" :
-                           id_mode == ConfigMenuModeSimple ? "simple" : "advanced";
-        app_config->set("view_mode", mode);
-        app_config->save();
-        update_mode();
+        save_mode(id_mode - ConfigMenuModeSimple);
     });
     menu->Append(local_menu, _(L("&Configuration")));
 }
diff --git a/src/slic3r/GUI/GUI_App.hpp b/src/slic3r/GUI/GUI_App.hpp
index e388910d7..6027be71e 100644
--- a/src/slic3r/GUI/GUI_App.hpp
+++ b/src/slic3r/GUI/GUI_App.hpp
@@ -134,8 +134,8 @@ public:
     void            get_installed_languages(wxArrayString & names, wxArrayLong & identifiers);
 
     Tab*            get_tab(Preset::Type type);
-    ConfigMenuIDs   get_view_mode();
-    ConfigOptionMode get_opt_mode();
+    ConfigOptionMode get_mode();
+    void            save_mode(const /*ConfigOptionMode*/int mode) ;
     void            update_mode();
 
     void            add_config_menu(wxMenuBar *menu);
diff --git a/src/slic3r/GUI/GUI_ObjectList.cpp b/src/slic3r/GUI/GUI_ObjectList.cpp
index bc54b2321..77906fe0d 100644
--- a/src/slic3r/GUI/GUI_ObjectList.cpp
+++ b/src/slic3r/GUI/GUI_ObjectList.cpp
@@ -680,7 +680,7 @@ void ObjectList::append_menu_items_add_volume(wxMenu* menu)
             menu->Destroy(settings_id);
     }
 
-    if (wxGetApp().get_view_mode() == ConfigMenuModeSimple)
+    if (wxGetApp().get_mode() == comSimple)
     {
         append_menu_item(menu, wxID_ANY, _(L("Add part")), "",
             [this](wxCommandEvent&) { load_subobject(ModelVolume::MODEL_PART); }, *m_bmp_vector[ModelVolume::MODEL_PART]);
@@ -719,7 +719,7 @@ wxMenuItem* ObjectList::append_menu_item_settings(wxMenu* menu)
     if (settings_id != wxNOT_FOUND)
         menu->Destroy(settings_id);
 
-    if (wxGetApp().get_view_mode() == ConfigMenuModeSimple)
+    if (wxGetApp().get_mode() == comSimple)
         return nullptr;
 
     auto  menu_item = new wxMenuItem(menu, wxID_ANY, _(L("Add settings")));
diff --git a/src/slic3r/GUI/GUI_ObjectManipulation.cpp b/src/slic3r/GUI/GUI_ObjectManipulation.cpp
index a03b0a212..dbf429f96 100644
--- a/src/slic3r/GUI/GUI_ObjectManipulation.cpp
+++ b/src/slic3r/GUI/GUI_ObjectManipulation.cpp
@@ -224,7 +224,7 @@ void ObjectManipulation::Show(const bool show)
 
     m_og->Show(show);
 
-    if (show && wxGetApp().get_view_mode() != ConfigMenuModeSimple) {
+    if (show && wxGetApp().get_mode() != comSimple) {
         m_og->get_grid_sizer()->Show(size_t(0), false);
         m_og->get_grid_sizer()->Show(size_t(1), false);
     }
diff --git a/src/slic3r/GUI/Plater.cpp b/src/slic3r/GUI/Plater.cpp
index 9fb87a197..56917c42f 100644
--- a/src/slic3r/GUI/Plater.cpp
+++ b/src/slic3r/GUI/Plater.cpp
@@ -434,6 +434,7 @@ struct Sidebar::priv
 
     wxScrolledWindow *scrolled;
 
+    PrusaModeSizer  *mode_sizer;
     wxFlexGridSizer *sizer_presets;
     PresetComboBox *combo_print;
     std::vector<PresetComboBox*> combos_filament;
@@ -492,6 +493,9 @@ Sidebar::Sidebar(Plater *parent)
     auto *scrolled_sizer = new wxBoxSizer(wxVERTICAL);
     p->scrolled->SetSizer(scrolled_sizer);
 
+    // Sizer with buttons for mode changing
+    p->mode_sizer = new PrusaModeSizer(p->scrolled);
+
     // The preset chooser
     p->sizer_presets = new wxFlexGridSizer(5, 2, 1, 2);
     p->sizer_presets->AddGrowableCol(1, 1);
@@ -558,6 +562,7 @@ Sidebar::Sidebar(Plater *parent)
     p->sliced_info = new SlicedInfo(p->scrolled);
 
     // Sizer in the scrolled area
+    scrolled_sizer->Add(p->mode_sizer, 0, wxALIGN_CENTER_HORIZONTAL | wxBOTTOM, 5);
     scrolled_sizer->Add(p->sizer_presets, 0, wxEXPAND | wxLEFT, 2);
     scrolled_sizer->Add(p->sizer_params, 1, wxEXPAND);
     scrolled_sizer->Add(p->object_info, 0, wxEXPAND | wxTOP | wxLEFT, 20);
@@ -673,6 +678,11 @@ void Sidebar::update_presets(Preset::Type preset_type)
     wxGetApp().preset_bundle->export_selections(*wxGetApp().app_config);
 }
 
+void Sidebar::update_mode_sizer(const Slic3r::ConfigOptionMode& mode)
+{
+    p->mode_sizer->SetMode(mode);
+}
+
 ObjectManipulation* Sidebar::obj_manipul()
 {
     return p->object_manipulation;
@@ -711,7 +721,7 @@ void Sidebar::update_objects_list_extruder_column(int extruders_count)
 void Sidebar::show_info_sizer()
 {
     if (!p->plater->is_single_full_object_selection() ||
-        m_mode < ConfigMenuModeExpert ||
+        m_mode < comExpert ||
         p->plater->model().objects.empty()) {
         p->object_info->Show(false);
         return;
diff --git a/src/slic3r/GUI/Plater.hpp b/src/slic3r/GUI/Plater.hpp
index 11a4f0453..373d7dc28 100644
--- a/src/slic3r/GUI/Plater.hpp
+++ b/src/slic3r/GUI/Plater.hpp
@@ -57,7 +57,7 @@ private:
 
 class Sidebar : public wxPanel
 {
-    /*ConfigMenuIDs*/int    m_mode;
+    /*ConfigOptionMode*/int    m_mode;
 public:
     Sidebar(Plater *parent);
     Sidebar(Sidebar &&) = delete;
@@ -69,6 +69,7 @@ public:
     void init_filament_combo(PresetComboBox **combo, const int extr_idx);
     void remove_unused_filament_combos(const int current_extruder_count);
     void update_presets(Slic3r::Preset::Type preset_type);
+    void update_mode_sizer(const Slic3r::ConfigOptionMode& mode);
 
     ObjectManipulation*     obj_manipul();
     ObjectList*             obj_list();
@@ -84,7 +85,7 @@ public:
     void                    show_reslice(bool show);
     void                    show_send(bool show);
     bool                    is_multifilament();
-    void                    set_mode_value(const /*ConfigMenuIDs*/int mode) { m_mode = mode; }
+    void                    set_mode_value(const /*ConfigOptionMode*/int mode) { m_mode = mode; }
 
     std::vector<PresetComboBox*>& combos_filament();
 private:
diff --git a/src/slic3r/GUI/Tab.cpp b/src/slic3r/GUI/Tab.cpp
index 4601d05d3..dc3f5fbca 100644
--- a/src/slic3r/GUI/Tab.cpp
+++ b/src/slic3r/GUI/Tab.cpp
@@ -168,6 +168,9 @@ void Tab::create_preset_tab()
 	m_modified_label_clr	= wxGetApp().get_label_clr_modified();
 	m_default_text_clr		= wxGetApp().get_label_clr_default();
 
+    // Sizer with buttons for mode changing
+    m_mode_sizer = new PrusaModeSizer(panel);
+
 	m_hsizer = new wxBoxSizer(wxHORIZONTAL);
 	sizer->Add(m_hsizer, 0, wxBOTTOM, 3);
 	m_hsizer->Add(m_presets_choice, 1, wxLEFT | wxRIGHT | wxTOP | wxALIGN_CENTER_VERTICAL, 3);
@@ -182,6 +185,8 @@ void Tab::create_preset_tab()
 	m_hsizer->Add(m_undo_btn, 0, wxALIGN_CENTER_VERTICAL);
 	m_hsizer->AddSpacer(32);
 	m_hsizer->Add(m_question_btn, 0, wxALIGN_CENTER_VERTICAL);
+    m_hsizer->AddStretchSpacer(32);
+    m_hsizer->Add(m_mode_sizer, 0, wxALIGN_CENTER_VERTICAL | wxRIGHT, 5);
 
 	//Horizontal sizer to hold the tree and the selected page.
 	m_hsizer = new wxBoxSizer(wxHORIZONTAL);
@@ -669,7 +674,7 @@ void Tab::reload_config()
 
 void Tab::update_visibility()
 {
-    const ConfigOptionMode mode = wxGetApp().get_opt_mode();
+    const ConfigOptionMode mode = wxGetApp().get_mode();
     Freeze();
 
 	for (auto page : m_pages)
@@ -685,6 +690,9 @@ void Tab::update_visibility()
     wxTheApp->CallAfter([this]() {
         update_changed_tree_ui();
     });
+
+    // update mode for ModeSizer
+    m_mode_sizer->SetMode(mode);
 }
 
 Field* Tab::get_field(const t_config_option_key& opt_key, int opt_index/* = -1*/) const
diff --git a/src/slic3r/GUI/Tab.hpp b/src/slic3r/GUI/Tab.hpp
index b3288a80d..b1ec505ab 100644
--- a/src/slic3r/GUI/Tab.hpp
+++ b/src/slic3r/GUI/Tab.hpp
@@ -31,6 +31,7 @@
 #include "BedShapeDialog.hpp"
 #include "Event.hpp"
 
+class PrusaModeSizer;
 
 namespace Slic3r {
 namespace GUI {
@@ -123,6 +124,8 @@ protected:
 	wxTreeCtrl*			m_treectrl;
 	wxImageList*		m_icons;
 
+    PrusaModeSizer*     m_mode_sizer;
+
    	struct PresetDependencies {
 		Preset::Type type	  = Preset::TYPE_INVALID;
 		wxCheckBox 	*checkbox = nullptr;
diff --git a/src/slic3r/GUI/wxExtensions.cpp b/src/slic3r/GUI/wxExtensions.cpp
index 61aee6a67..3219a1e32 100644
--- a/src/slic3r/GUI/wxExtensions.cpp
+++ b/src/slic3r/GUI/wxExtensions.cpp
@@ -2195,7 +2195,6 @@ PrusaLockButton::PrusaLockButton(   wxWindow *parent,
     m_bmp_lock_off = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("one_layer_lock_off.png")), wxBITMAP_TYPE_PNG);
     m_bmp_unlock_on = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("one_layer_unlock_on.png")), wxBITMAP_TYPE_PNG);
     m_bmp_unlock_off = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("one_layer_unlock_off.png")), wxBITMAP_TYPE_PNG);
-    m_lock_icon_dim = m_bmp_lock_on.GetSize().x;
 
 #ifdef __WXMSW__
     SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
@@ -2234,6 +2233,104 @@ void PrusaLockButton::enter_button(const bool enter)
     Update();
 }
 
+
+
+// ----------------------------------------------------------------------------
+// PrusaModeButton
+// ----------------------------------------------------------------------------
+
+PrusaModeButton::PrusaModeButton(   wxWindow *parent,
+                                    wxWindowID id,
+                                    const wxString& mode/* = wxEmptyString*/,
+                                    const wxBitmap& bmp_on/* = wxNullBitmap*/,
+                                    const wxPoint& pos/* = wxDefaultPosition*/,
+                                    const wxSize& size/* = wxDefaultSize*/) :
+    wxButton(parent, id, mode, pos, size, wxBU_EXACTFIT | wxNO_BORDER),
+    m_bmp_on(bmp_on)
+{
+#ifdef __WXMSW__
+    SetBackgroundColour(wxSystemSettings::GetColour(wxSYS_COLOUR_WINDOW));
+#endif // __WXMSW__
+    m_bmp_off = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("mode_off_sq.png")), wxBITMAP_TYPE_PNG);
+
+    SetBitmap(m_bmp_on);
+
+    //button events
+    Bind(wxEVT_BUTTON,          &PrusaModeButton::OnButton, this);
+    Bind(wxEVT_ENTER_WINDOW,    &PrusaModeButton::OnEnterBtn, this);
+    Bind(wxEVT_LEAVE_WINDOW,    &PrusaModeButton::OnLeaveBtn, this);
+}
+
+void PrusaModeButton::OnButton(wxCommandEvent& event)
+{
+    m_is_selected = true;
+    focus_button(m_is_selected);
+
+    event.Skip();
+}
+
+void PrusaModeButton::SetState(const bool state)
+{
+    m_is_selected = state;
+    focus_button(m_is_selected);
+}
+
+void PrusaModeButton::focus_button(const bool focus)
+{
+    const wxBitmap& bmp = focus ? m_bmp_on : m_bmp_off;
+    SetBitmap(bmp);
+    const wxFont& new_font = focus ? Slic3r::GUI::wxGetApp().bold_font() : Slic3r::GUI::wxGetApp().small_font();
+    SetFont(new_font);
+
+    Refresh();
+    Update();
+}
+
+
+// ----------------------------------------------------------------------------
+// PrusaModeSizer
+// ----------------------------------------------------------------------------
+
+PrusaModeSizer::PrusaModeSizer(wxWindow *parent) :
+    wxFlexGridSizer(3, 0, 5)
+{
+    SetFlexibleDirection(wxHORIZONTAL);
+
+    const wxBitmap bmp_simple_on    = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("mode_simple_sq.png")),   wxBITMAP_TYPE_PNG);
+    const wxBitmap bmp_advanced_on  = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("mode_middle_sq.png")),  wxBITMAP_TYPE_PNG);
+    const wxBitmap bmp_expert_on    = wxBitmap(Slic3r::GUI::from_u8(Slic3r::var("mode_expert_sq.png")),     wxBITMAP_TYPE_PNG);
+    
+    mode_btns.reserve(3);
+
+    mode_btns.push_back(new PrusaModeButton(parent, wxID_ANY, "Simple",     bmp_simple_on));
+    mode_btns.push_back(new PrusaModeButton(parent, wxID_ANY, "Advanced",   bmp_advanced_on));
+    mode_btns.push_back(new PrusaModeButton(parent, wxID_ANY, "Expert",     bmp_expert_on));
+
+    for (auto btn : mode_btns)
+    {
+        btn->Bind(wxEVT_BUTTON, [btn, this](wxCommandEvent &event) {
+            event.Skip();
+            int mode_id = 0;
+            for (auto cur_btn : mode_btns) {
+                if (cur_btn == btn)
+                    break;
+                else
+                    mode_id++;
+            }
+            Slic3r::GUI::wxGetApp().save_mode(mode_id);
+        });
+
+        Add(btn);
+    }
+
+}
+
+void PrusaModeSizer::SetMode(const Slic3r::ConfigOptionMode& mode)
+{
+    for (int m = 0; m < mode_btns.size(); m++)
+        mode_btns[m]->SetState(m == mode);
+}
+
 // ************************************** EXPERIMENTS ***************************************
 
 // *****************************************************************************
diff --git a/src/slic3r/GUI/wxExtensions.hpp b/src/slic3r/GUI/wxExtensions.hpp
index b6f7a4220..1fad86e10 100644
--- a/src/slic3r/GUI/wxExtensions.hpp
+++ b/src/slic3r/GUI/wxExtensions.hpp
@@ -8,6 +8,7 @@
 #include <wx/collpane.h>
 #include <wx/wupdlock.h>
 #include <wx/button.h>
+#include <wx/sizer.h>
 #include <wx/slider.h>
 
 #include <vector>
@@ -863,8 +864,57 @@ private:
     wxBitmap    m_bmp_lock_off;
     wxBitmap    m_bmp_unlock_on;
     wxBitmap    m_bmp_unlock_off;
+};
 
-    int         m_lock_icon_dim;
+
+// ----------------------------------------------------------------------------
+// PrusaModeButton
+// ----------------------------------------------------------------------------
+
+class PrusaModeButton : public wxButton
+{
+public:
+    PrusaModeButton(
+        wxWindow *parent,
+        wxWindowID id,
+        const wxString& mode = wxEmptyString,
+        const wxBitmap& bmp_on = wxNullBitmap,
+        const wxPoint& pos = wxDefaultPosition,
+        const wxSize& size = wxDefaultSize);
+    ~PrusaModeButton() {}
+
+    void    OnButton(wxCommandEvent& event);
+    void    OnEnterBtn(wxMouseEvent& event) { focus_button(true); event.Skip(); }
+    void    OnLeaveBtn(wxMouseEvent& event) { focus_button(m_is_selected); event.Skip(); }
+
+    void    SetState(const bool state);
+
+protected:
+    void    focus_button(const bool focus);
+
+private:
+    bool        m_is_selected = false;
+
+    wxBitmap    m_bmp_on;
+    wxBitmap    m_bmp_off;
+};
+
+
+
+// ----------------------------------------------------------------------------
+// PrusaModeSizer
+// ----------------------------------------------------------------------------
+
+class PrusaModeSizer : public wxFlexGridSizer
+{
+public:
+    PrusaModeSizer( wxWindow *parent);
+    ~PrusaModeSizer() {}
+
+    void SetMode(const Slic3r::ConfigOptionMode& mode);
+
+private:
+    std::vector<PrusaModeButton*> mode_btns;
 };