diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index cccaf64392..326dfe68d5 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -271,6 +271,7 @@ CLASSKEYS(ARDOUR::Session);
 CLASSKEYS(ARDOUR::SessionConfiguration);
 CLASSKEYS(ARDOUR::Slavable);
 CLASSKEYS(ARDOUR::Source);
+CLASSKEYS(ARDOUR::Track);
 CLASSKEYS(ARDOUR::VCA);
 CLASSKEYS(ARDOUR::VCAManager);