diff --git a/src/MainWindow.vala b/src/MainWindow.vala
index de7603ae4..36553d550 100644
--- a/src/MainWindow.vala
+++ b/src/MainWindow.vala
@@ -225,7 +225,11 @@ public class Camera.MainWindow : Gtk.ApplicationWindow {
         menu_button = new Gtk.MenuButton () {
             icon_name = "open-menu-symbolic",
             popover = popover,
-            tooltip_text = _("Settings")
+            primary = true,
+            tooltip_markup = ("%s\n" + Granite.TOOLTIP_SECONDARY_TEXT_MARKUP).printf (
+                _("Settings"),
+                "F10"
+            )
         };
 
         /* Construct menu for multiple cameras */