diff --git a/dialogs/display-settings/main.c b/dialogs/display-settings/main.c
index a6f90a2..f0f6964 100644
--- a/dialogs/display-settings/main.c
+++ b/dialogs/display-settings/main.c
@@ -1916,6 +1916,8 @@ display_settings_show_minimal_dialog (GdkDisplay *display)
             /* Can outputs be cloned? */
             if (display_settings_get_n_active_outputs () > 1)
                 mode = xfce_randr_clonable_mode (xfce_randr);
+            else
+                mode = None;
 
             gtk_widget_set_sensitive (GTK_WIDGET (mirror_displays), mode != None);