diff --git a/libs/ardour/ardour/triggerbox.h b/libs/ardour/ardour/triggerbox.h
index 24f002a36a..719b93fbdd 100644
--- a/libs/ardour/ardour/triggerbox.h
+++ b/libs/ardour/ardour/triggerbox.h
@@ -76,6 +76,9 @@ class LIBARDOUR_API TriggerBox : public Processor
 	bool queue_trigger (Trigger*);
 	void add_trigger (Trigger*);
 
+	XMLNode& get_state (void);
+	int set_state (const XMLNode&, int version);
+
   private:
 	PBD::RingBuffer<Trigger*> _trigger_queue;
 
diff --git a/libs/ardour/triggerbox.cc b/libs/ardour/triggerbox.cc
index 8e26123393..f352e6d712 100644
--- a/libs/ardour/triggerbox.cc
+++ b/libs/ardour/triggerbox.cc
@@ -177,6 +177,19 @@ TriggerBox::run (BufferSet& bufs, samplepos_t start_sample, samplepos_t end_samp
 	}
 }
 
+XMLNode&
+TriggerBox::get_state (void)
+{
+	return Processor::get_state ();
+}
+
+int
+TriggerBox::set_state (const XMLNode&, int version)
+{
+	return 0;
+}
+
+
 /*--------------------*/
 
 AudioTrigger::AudioTrigger (boost::shared_ptr<AudioRegion> r)