diff --git a/src/mesa/tnl/t_vtx_api.c b/src/mesa/tnl/t_vtx_api.c
index cc00dfda302..b766ce2d2ce 100644
--- a/src/mesa/tnl/t_vtx_api.c
+++ b/src/mesa/tnl/t_vtx_api.c
@@ -174,6 +174,8 @@ static void _tnl_copy_to_current( GLcontext *ctx )
    }
          
    ctx->Driver.NeedFlush &= ~FLUSH_UPDATE_CURRENT;
+
+   ctx->NewState |= _NEW_LIGHT;
 }