diff --git a/paddle/fluid/framework/threadpool.cc b/paddle/fluid/framework/threadpool.cc
index a471c83115f2394ad81c9cf2053919211461a0c2..21fab2cf5f95d74148d578551770c17cd3ee6283 100644
--- a/paddle/fluid/framework/threadpool.cc
+++ b/paddle/fluid/framework/threadpool.cc
@@ -57,7 +57,7 @@ ThreadPool::ThreadPool(int num_threads) : running_(true) {
 ThreadPool::~ThreadPool() {
   {
     // notify all threads to stop running
-    std::lock_guard<std::mutex> l(mutex_);
+    std::unique_lock<std::mutex> l(mutex_);
     running_ = false;
   }
   scheduled_.notify_all();