diff --git a/src/utils/Obs_VolumeMeter.cpp b/src/utils/Obs_VolumeMeter.cpp
index db683db4..92fbe3cf 100644
--- a/src/utils/Obs_VolumeMeter.cpp
+++ b/src/utils/Obs_VolumeMeter.cpp
@@ -278,9 +278,7 @@ Utils::Obs::VolumeMeter::Handler::~Handler()
 	signal_handler_disconnect(sh, "source_deactivate", Handler::InputDeactivateCallback, this);
 
 	if (_running) {
-		_mutex.lock();
 		_running = false;
-		_mutex.unlock();
 		_cond.notify_all();
 	}
 
diff --git a/src/utils/Obs_VolumeMeter.h b/src/utils/Obs_VolumeMeter.h
index 75e46faf..9058fb2d 100644
--- a/src/utils/Obs_VolumeMeter.h
+++ b/src/utils/Obs_VolumeMeter.h
@@ -87,7 +87,7 @@ namespace Utils {
 
 					std::mutex _mutex;
 					std::condition_variable _cond;
-					bool _running;
+					std::atomic<bool> _running;
 					std::thread _updateThread;
 
 					void UpdateThread();