diff --git a/gdk/mir/gdkmir.h b/gdk/mir/gdkmir.h
index 92476f634f..4339cccb3e 100644
--- a/gdk/mir/gdkmir.h
+++ b/gdk/mir/gdkmir.h
@@ -39,6 +39,9 @@ MirConnection *gdk_mir_display_get_mir_connection (GdkDisplay *display);
 GDK_AVAILABLE_IN_3_10
 GType gdk_mir_window_get_type (void);
 
+GDK_AVAILABLE_IN_3_16
+MirSurface *gdk_mir_window_get_mir_surface (GdkWindow *window);
+
 GDK_AVAILABLE_IN_3_16
 GType gdk_mir_gl_context_get_type (void) G_GNUC_CONST;
 
diff --git a/gdk/mir/gdkmirwindowimpl.c b/gdk/mir/gdkmirwindowimpl.c
index aa029f5e4a..57cd70d0f9 100644
--- a/gdk/mir/gdkmirwindowimpl.c
+++ b/gdk/mir/gdkmirwindowimpl.c
@@ -1519,6 +1519,18 @@ _gdk_mir_window_get_dummy_egl_surface (GdkWindow *window,
   return impl->dummy_egl_surface;
 }
 
+MirSurface *
+gdk_mir_window_get_mir_surface (GdkWindow *window)
+{
+  GdkMirWindowImpl *impl;
+
+  g_return_val_if_fail (GDK_IS_WINDOW_MIR (window), NULL);
+
+  impl = GDK_MIR_WINDOW_IMPL (window->impl);
+
+  return impl->surface;
+}
+
 static void
 gdk_mir_window_impl_class_init (GdkMirWindowImplClass *klass)
 {