diff --git a/libs/ardour/ardour/audio_unit.h b/libs/ardour/ardour/audio_unit.h
index abbfdbea3d..74edd4a3c2 100644
--- a/libs/ardour/ardour/audio_unit.h
+++ b/libs/ardour/ardour/audio_unit.h
@@ -97,8 +97,8 @@ class AUPlugin : public ARDOUR::Plugin
     
 	int set_state(const XMLNode& node, int);
 	
-	bool save_preset (std::string name);
-	bool load_preset (const std::string& preset_label);
+	PresetRecord save_preset (std::string name);
+	bool load_preset (PresetRecord);
 	std::string current_preset() const;
 
 	bool has_editor () const;
diff --git a/libs/ardour/audio_unit.cc b/libs/ardour/audio_unit.cc
index babbfe20af..4d712e13f1 100644
--- a/libs/ardour/audio_unit.cc
+++ b/libs/ardour/audio_unit.cc
@@ -1658,8 +1658,10 @@ AUPlugin::set_state(const XMLNode& node, int version)
 }
 
 bool
-AUPlugin::load_preset (const string& preset_label)
+AUPlugin::load_preset (PluginRecord r)
 {
+	Plugin::load_preset (r);
+	
 #ifdef AU_STATE_SUPPORT
 	bool ret = false;
 	CFPropertyListRef propertyList;
@@ -1719,7 +1721,7 @@ AUPlugin::load_preset (const string& preset_label)
 #endif
 }
 
-bool
+PresetRecord
 AUPlugin::save_preset (string preset_name)
 {
 #ifdef AU_STATE_SUPPORT