diff --git a/gtk2_ardour/dsp_load_indicator.cc b/gtk2_ardour/dsp_load_indicator.cc
index d39b610c4a..379307da1e 100644
--- a/gtk2_ardour/dsp_load_indicator.cc
+++ b/gtk2_ardour/dsp_load_indicator.cc
@@ -71,6 +71,8 @@ DspLoadIndicator::alert () const
 
 	//engine OFF
 	ret |= !ARDOUR::AudioEngine::instance()->running();
+	
+	return ret;
 }
 
 ArdourGauge::Status