diff --git a/utils/threadpool/threadpool.h b/utils/threadpool/threadpool.h
index d12d15390..ea9f89da6 100644
--- a/utils/threadpool/threadpool.h
+++ b/utils/threadpool/threadpool.h
@@ -350,7 +350,7 @@ class ThreadPool
   boost::condition_variable fNeedThread;       // triggered when a thread is needed
   ThreadPoolGroup fThreads;
 
-  bool fStop;
+  std::atomic<bool> fStop = false;
   long fGeneralErrors;
   long fFunctorErrors;
   uint32_t waitingFunctorsSize;