diff --git a/libs/ardour/ardour/plugin_manager.h b/libs/ardour/ardour/plugin_manager.h
index 2c081ddfa3..e25a268b2e 100644
--- a/libs/ardour/ardour/plugin_manager.h
+++ b/libs/ardour/ardour/plugin_manager.h
@@ -78,6 +78,8 @@ class LIBARDOUR_API PluginManager : public boost::noncopyable {
 
 	/** plugins were added to or removed from one of the PluginInfoLists */
 	PBD::Signal0<void> PluginListChanged;
+	/** Plugin Hidden/Favorite status changed */
+	PBD::Signal0<void> PluginStatusesChanged;
 
   private:
 	struct PluginStatus {
diff --git a/libs/ardour/plugin_manager.cc b/libs/ardour/plugin_manager.cc
index 2e1b21e4ef..53d73c45c6 100644
--- a/libs/ardour/plugin_manager.cc
+++ b/libs/ardour/plugin_manager.cc
@@ -1123,6 +1123,7 @@ PluginManager::save_statuses ()
 		ofs << endl;
 	}
 	g_file_set_contents (path.c_str(), ofs.str().c_str(), -1, NULL);
+	PluginStatusesChanged (); /* EMIT SIGNAL */
 }
 
 void