diff --git a/gtk2_ardour/trigger_master.cc b/gtk2_ardour/trigger_master.cc
index 175fed4ed3..6c042795c2 100644
--- a/gtk2_ardour/trigger_master.cc
+++ b/gtk2_ardour/trigger_master.cc
@@ -165,7 +165,7 @@ TriggerMaster::TriggerMaster (Item* parent, boost::shared_ptr<TriggerBox> t)
 
 TriggerMaster::~TriggerMaster ()
 {
-	delete _loopster;
+	update_connection.disconnect();
 }
 
 void