diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index 55c445e834..5b66018c26 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -48,6 +48,7 @@
 #include "ardour/runtime_functions.h"
 #include "ardour/region.h"
 #include "ardour/region_factory.h"
+#include "ardour/route_group.h"
 #include "ardour/session.h"
 #include "ardour/session_object.h"
 #include "ardour/sidechain.h"