diff --git a/gdk/x11/gdksurface-x11.c b/gdk/x11/gdksurface-x11.c
index 9f6c7b2d2d..db8a8770ed 100644
--- a/gdk/x11/gdksurface-x11.c
+++ b/gdk/x11/gdksurface-x11.c
@@ -201,6 +201,8 @@ gdk_x11_surface_update_size (GdkX11Surface *self,
       cairo_surface_set_device_scale (self->cairo_surface, scale, scale);
     }
 
+  gdk_surface_invalidate_rect (surface, NULL);
+
   return TRUE;
 }