diff --git a/libs/ctrl-interface/control_protocol/basic_ui.cc b/libs/ctrl-interface/control_protocol/basic_ui.cc
index fb2e1c1034..a20e59ad39 100644
--- a/libs/ctrl-interface/control_protocol/basic_ui.cc
+++ b/libs/ctrl-interface/control_protocol/basic_ui.cc
@@ -781,6 +781,12 @@ BasicUI::locked ()
 	return session->transport_locked ();
 }
 
+bool
+BasicUI::session_empty () const
+{
+	return session->empty ();
+}
+
 ARDOUR::samplecnt_t
 BasicUI::timecode_frames_per_hour ()
 {
diff --git a/libs/ctrl-interface/control_protocol/control_protocol/basic_ui.h b/libs/ctrl-interface/control_protocol/control_protocol/basic_ui.h
index 39912754ba..31bfe2b46e 100644
--- a/libs/ctrl-interface/control_protocol/control_protocol/basic_ui.h
+++ b/libs/ctrl-interface/control_protocol/control_protocol/basic_ui.h
@@ -88,6 +88,8 @@ class LIBCONTROLCP_API BasicUI {
 	bool locked ();
 
 	void save_state ();
+	bool session_empty () const;
+
 	void prev_marker ();
 	void next_marker ();
 	void undo ();