diff --git a/include/spdlog/details/periodic_worker-inl.h b/include/spdlog/details/periodic_worker-inl.h
index 520a2b33..9960d51f 100644
--- a/include/spdlog/details/periodic_worker-inl.h
+++ b/include/spdlog/details/periodic_worker-inl.h
@@ -16,10 +16,10 @@ SPDLOG_INLINE periodic_worker::~periodic_worker()
     if (worker_thread_.joinable())
     {
         {
-            std::lock_guard<std::mutex> lock(mutex_);
+            std::unique_lock<std::mutex> lock(mutex_);
             active_ = false;
+            cv_.notify_one();
         }
-        cv_.notify_one();
         worker_thread_.join();
     }
 }