diff --git a/libs/backends/portaudio/portaudio_backend.cc b/libs/backends/portaudio/portaudio_backend.cc
index 8298af53ff..74ca7a561c 100644
--- a/libs/backends/portaudio/portaudio_backend.cc
+++ b/libs/backends/portaudio/portaudio_backend.cc
@@ -736,7 +736,7 @@ PortAudioBackend::process_callback(const float* input,
                                    PaStreamCallbackFlags statusFlags)
 {
 	PBD::WaitTimerRAII tr (dsp_stats[DeviceWait]);
-	PBD::TimerRAII tr2 (dsp_stats[RunLoop]);
+	PBD::TimerRAII tr2 (dsp_stats[RunLoop], true);
 
 	_active = true;