mark session dirty when changing plugin presets

diff --git a/libs/ardour/plugin.cc b/libs/ardour/plugin.cc
index 884ac0d53efbfc8b0f2607a2e55453483045219a..a0ac97b440b7a5e6cdc313e8bf72c6cd14120235 100644 (file)
--- a/libs/ardour/plugin.cc
+++ b/libs/ardour/plugin.cc
@@ -426,6 +426,7 @@ Plugin::load_preset (PresetRecord r)
        _last_preset = r;
        _parameter_changed_since_last_preset = false;
 
+       _session.set_dirty ();
        PresetLoaded (); /* EMIT SIGNAL */
        return true;
 }
@@ -437,6 +438,7 @@ Plugin::clear_preset ()
        _last_preset.label = "";
        _parameter_changed_since_last_preset = false;
 
+       _session.set_dirty ();
        PresetLoaded (); /* EMIT SIGNAL */
 }