diff --git a/libs/ardour/ardour/triggerbox.h b/libs/ardour/ardour/triggerbox.h
index 72ded02052..1d287d834c 100644
--- a/libs/ardour/ardour/triggerbox.h
+++ b/libs/ardour/ardour/triggerbox.h
@@ -595,7 +595,7 @@ namespace Properties {
 	LIBARDOUR_API extern PBD::PropertyDescriptor<int> follow_action_probability;
 	LIBARDOUR_API extern PBD::PropertyDescriptor<float> velocity_effect;
 	LIBARDOUR_API extern PBD::PropertyDescriptor<gain_t> gain;
-	LIBARDOUR_API extern PBD::PropertyDescriptor<int> currently_playing;
+	LIBARDOUR_API extern PBD::PropertyDescriptor<Trigger*> currently_playing;
 }
 
 
diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index 2ef710aeed..26040bd399 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -50,6 +50,7 @@ namespace ARDOUR {
 		PBD::PropertyDescriptor<Trigger::LaunchStyle> launch_style;
 		PBD::PropertyDescriptor<Trigger::FollowAction> follow_action0;
 		PBD::PropertyDescriptor<Trigger::FollowAction> follow_action1;
+		PBD::PropertyDescriptor<Trigger*> currently_playing;
 		PBD::PropertyDescriptor<int> follow_count;
 		PBD::PropertyDescriptor<int> follow_action_probability;
 		PBD::PropertyDescriptor<float> velocity_effect;