diff --git a/gdk/mir/gdkmir.h b/gdk/mir/gdkmir.h
index 38cc80c578..811a8dfe86 100644
--- a/gdk/mir/gdkmir.h
+++ b/gdk/mir/gdkmir.h
@@ -41,7 +41,7 @@ MirConnection *gdk_mir_display_get_mir_connection (GdkDisplay *display);
 GDK_AVAILABLE_IN_3_16
 GType gdk_mir_window_get_type (void);
 
-GDK_AVAILABLE_IN_3_16
+GDK_DEPRECATED_IN_3_22
 MirSurface *gdk_mir_window_get_mir_surface (GdkWindow *window);
 
 GDK_AVAILABLE_IN_3_16
diff --git a/gdk/mir/gdkmirwindowimpl.c b/gdk/mir/gdkmirwindowimpl.c
index bc41369e17..e270e72af4 100644
--- a/gdk/mir/gdkmirwindowimpl.c
+++ b/gdk/mir/gdkmirwindowimpl.c
@@ -2289,12 +2289,17 @@ _gdk_mir_window_get_dummy_egl_surface (GdkWindow *window,
   return impl->dummy_egl_surface;
 }
 
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+
 MirSurface *
 gdk_mir_window_get_mir_surface (GdkWindow *window)
 {
   return _gdk_mir_window_get_mir_window (window);
 }
 
+#pragma GCC diagnostic pop
+
 MirWindow *
 _gdk_mir_window_get_mir_window (GdkWindow *window)
 {