diff --git a/lib/pls/include/pls/internal/scheduling/scheduler.h b/lib/pls/include/pls/internal/scheduling/scheduler.h
index f55fecf..c38ae64 100644
--- a/lib/pls/include/pls/internal/scheduling/scheduler.h
+++ b/lib/pls/include/pls/internal/scheduling/scheduler.h
@@ -37,7 +37,7 @@ class scheduler {
   base::barrier sync_barrier_;
 
   task *main_thread_root_task_;
-  bool work_section_done_;
+  std::atomic<bool> work_section_done_;
 
   bool terminated_;
  public: