diff --git a/grape/utils/thread_pool.h b/grape/utils/thread_pool.h
index b5d2d510..66a57655 100644
--- a/grape/utils/thread_pool.h
+++ b/grape/utils/thread_pool.h
@@ -124,8 +124,8 @@ inline void ThreadPool::WaitEnd(std::vector<std::future<void>>& results) {
 // add new task to the pool
 template <class F, class... Args>
 auto ThreadPool::enqueue(F&& f, Args&&... args)
-    -> std::future<typename std::result_of<F(Args...)>::type> {
-  using return_type = typename std::result_of<F(Args...)>::type;
+    -> std::future<grape::result_of_t<F, Args...>> {
+  using return_type = grape::result_of_t<F, Args...>;
 
   auto task = std::make_shared<std::packaged_task<return_type()>>(
       std::bind(std::forward<F>(f), std::forward<Args>(args)...));