diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc
index 936113d26e..d3597989ed 100644
--- a/libs/ardour/audio_unit.cc
+++ b/libs/ardour/audio_unit.cc
@@ -2383,7 +2383,7 @@ AUPluginInfo::load (Session& session)
 Glib::ustring
 AUPluginInfo::au_cache_path ()
 {
-	return Glib::build_filename (ARDOUR::user_config_directory(), "au_cache");
+	return Glib::build_filename (ARDOUR::user_cache_directory(), "au_cache");
 }
 
 PluginInfoList*