diff --git a/gui/manager.cpp b/gui/manager.cpp
index c5a6b219..669f33c4 100644
--- a/gui/manager.cpp
+++ b/gui/manager.cpp
@@ -115,22 +115,27 @@ static bool on_idle()
 	return ret;
 }
 
+static void idle_enable()
+{
+	Glib :: signal_idle().connect(sigc::ptr_fun(on_idle));
+}
+
 static void on_add()
 {
 	list_path(library :: add(c_chooser->get_filename()));
-	lib :: idle(on_idle);
+	idle_enable();
 }
 
 static void on_update()
 {
 	library :: update_all();
-	lib :: idle(on_idle);
+	idle_enable();
 }
 
 static void on_row_activated(const Gtk::TreePath &path, Gtk::TreeViewColumn *col)
 {
 	library :: update(get_library(path));
-	lib :: idle(on_idle);
+	idle_enable();
 }
 
 static void on_cursor_changed()
diff --git a/include/lib/lib.h b/include/lib/lib.h
index d7f1c7f4..64e6321f 100644
--- a/include/lib/lib.h
+++ b/include/lib/lib.h
@@ -14,7 +14,6 @@ namespace lib
 	const std::string share_file(const std::string &);
 	Glib::RefPtr<Gtk::Builder> &get_builder();
 	const std::string key_name(GdkEventKey *);
-	void idle(bool (*)());
 	void schedule(bool (*)(), unsigned int);
 
 	template <class T>