diff --git a/gdk/wayland/gdkwaylandsurface.h b/gdk/wayland/gdkwaylandsurface.h
index b7b73ba8ef..57decfcf3d 100644
--- a/gdk/wayland/gdkwaylandsurface.h
+++ b/gdk/wayland/gdkwaylandsurface.h
@@ -45,9 +45,6 @@ typedef struct _GdkWaylandSurfaceClass GdkWaylandSurfaceClass;
 GDK_AVAILABLE_IN_ALL
 GType                    gdk_wayland_surface_get_type             (void);
 
-GDK_AVAILABLE_IN_ALL
-GdkSurface *              gdk_wayland_surface_new_subsurface       (GdkDisplay            *display,
-                                                                    const GdkRectangle    *position);
 GDK_AVAILABLE_IN_ALL
 struct wl_surface       *gdk_wayland_surface_get_wl_surface       (GdkSurface *surface);