diff --git a/Eigen/src/ThreadPool/ForkJoin.h b/Eigen/src/ThreadPool/ForkJoin.h
index 44eefaf..588636a 100644
--- a/Eigen/src/ThreadPool/ForkJoin.h
+++ b/Eigen/src/ThreadPool/ForkJoin.h
@@ -92,6 +92,7 @@
   // Schedules `right_thunk`, runs `left_thunk`, and runs other tasks until `right_thunk` has finished.
   template <typename LeftType, typename RightType, typename ThreadPoolEnv>
   static void ForkJoin(LeftType&& left_thunk, RightType&& right_thunk, ThreadPoolTempl<ThreadPoolEnv>* thread_pool) {
+    typedef typename ThreadPoolTempl<ThreadPoolEnv>::Task Task;
     std::atomic<bool> right_done(false);
     auto execute_right = [&right_thunk, &right_done]() {
       std::forward<RightType>(right_thunk)();
@@ -99,7 +100,7 @@
     };
     thread_pool->Schedule(execute_right);
     std::forward<LeftType>(left_thunk)();
-    ThreadPool::Task task;
+    Task task;
     while (!right_done.load(std::memory_order_acquire)) {
       thread_pool->MaybeGetTask(&task);
       if (task.f) task.f();