diff --git a/src/math-window.vala b/src/math-window.vala
index 9b07786..bfcf451 100644
--- a/src/math-window.vala
+++ b/src/math-window.vala
@@ -78,15 +78,37 @@ public class MathWindow : Gtk.ApplicationWindow
         menu_button.relief = Gtk.ReliefStyle.NONE;
         menu_button.show ();
 
+        var main_vbox = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
+        add (main_vbox);
+        main_vbox.show ();
+
         headerbar = new Gtk.HeaderBar ();
         headerbar.show_close_button = true;
         headerbar.custom_title = menu_button;
         headerbar.show ();
-        set_titlebar (headerbar);
-
-        var main_vbox = new Gtk.Box (Gtk.Orientation.VERTICAL, 0);
-        add (main_vbox);
-        main_vbox.show ();
+        if (!is_desktop ("Unity"))
+            set_titlebar (headerbar);
+        else
+        {
+            var menu = new Menu ();
+            var section = new Menu ();
+            menu.append_submenu (_("Mode"), section);
+            var item = new MenuItem (_("Basic Mode"), null);
+            item.set_action_and_target ("win.mode", "s", "basic");
+            section.append_item (item);
+            item = new MenuItem (_("Advanced Mode"), null);
+            item.set_action_and_target ("win.mode", "s", "advanced");
+            section.append_item (item);
+            item = new MenuItem (_("Financial Mode"), null);
+            item.set_action_and_target ("win.mode", "s", "financial");
+            section.append_item (item);
+            item = new MenuItem (_("Programming Mode"), null);
+            item.set_action_and_target ("win.mode", "s", "programming");
+            section.append_item (item);
+            var menubar = new Gtk.MenuBar.from_model (menu);
+            menubar.visible = true;
+            main_vbox.pack_start (menubar, true, true, 0);
+        }
 
         var vbox = new Gtk.Box (Gtk.Orientation.VERTICAL, 6);
         vbox.border_width = 6;
@@ -113,6 +135,19 @@ public class MathWindow : Gtk.ApplicationWindow
         mode_changed_cb ();
     }
 
+    private bool is_desktop (string name)
+    {
+        var desktop_name_list = Environment.get_variable ("XDG_CURRENT_DESKTOP");
+        if (desktop_name_list == null)
+            return false;
+
+        foreach (var n in desktop_name_list.split (":"))
+            if (n == name)
+                return true;
+
+        return false;
+    }
+
     private void mode_changed_cb ()
     {
         var action = (SimpleAction) lookup_action ("mode");