--- a/ui/gtk/toolkit.h	Sun Jan 22 11:16:21 2017 +0100
+++ b/ui/gtk/toolkit.h	Sun Jan 22 11:48:50 2017 +0100
@@ -55,8 +55,10 @@
 typedef enum UiOrientation UiOrientation;
 enum UiOrientation { UI_HORIZONTAL = 0, UI_VERTICAL };
 
+#ifndef UI_GTK2
 void ui_app_quit();
 GtkApplication* ui_get_application();
+#endif
 
 void ui_destroy_userdata(GtkWidget *object, void *userdata);