diff --git a/src/client.py b/src/client.py
index 551f524..43de37c 100644
--- a/src/client.py
+++ b/src/client.py
@@ -143,6 +143,8 @@ class Client(Base):
     SIGNAL_LOAD_OUTPUT_DEVICES = 'load-output-devices'
     # Signal: load albumart
     SIGNAL_LOAD_ALBUMART = 'albumart'
+    # Signal: custom (dummy) event to trigger callback
+    SIGNAL_CUSTOM = 'custom'
     # Signal: error
     SIGNAL_ERROR = 'error'
     # Buffer size for reading from socket
@@ -317,6 +319,11 @@ class Client(Base):
         return albumart
 
 
+    def get_custom(self, name):
+        self._logger.info("get custom \"%s\"", name)
+        self._add_action_signal(Client.SIGNAL_CUSTOM, self._get_custom, name)
+
+
     # Private methods
 
     def _connect(self, host, port, password):
@@ -664,6 +671,10 @@ class Client(Base):
         return (album, None)
 
 
+    def _get_custom(self, name):
+        return (name, )
+
+
     def _start_worker(self):
         """Start the worker thread which waits for action to be performed."""
         self._logger.debug("start worker")
diff --git a/src/window.py b/src/window.py
index 26eed81..a64fded 100644
--- a/src/window.py
+++ b/src/window.py
@@ -57,6 +57,7 @@ class Window(Adw.ApplicationWindow):
     SETTING_ITEM_SIZE = 'item-size'
     SETTING_SORT_ORDER = 'sort-order'
     SETTING_SORT_TYPE = 'sort-type'
+    _CUSTOM_STARTUP_COMPLETE = 'startup-complete'
 
     # Widgets
     toolbar_view = Gtk.Template.Child()
@@ -162,6 +163,7 @@ class Window(Adw.ApplicationWindow):
         self._mcg.connect_signal(client.Client.SIGNAL_INIT_ALBUMS, self.on_mcg_init_albums)
         self._mcg.connect_signal(client.Client.SIGNAL_LOAD_ALBUMS, self.on_mcg_load_albums)
         self._mcg.connect_signal(client.Client.SIGNAL_LOAD_ALBUMART, self.on_mcg_load_albumart)
+        self._mcg.connect_signal(client.Client.SIGNAL_CUSTOM, self.on_mcg_custom)
         self._mcg.connect_signal(client.Client.SIGNAL_ERROR, self.on_mcg_error)
         self._settings.connect('changed::'+Window.SETTING_PANEL, self.on_settings_panel_changed)
         self._settings.connect('changed::'+Window.SETTING_ITEM_SIZE, self.on_settings_item_size_changed)
@@ -391,6 +393,7 @@ class Window(Adw.ApplicationWindow):
             GObject.idle_add(self._connect_connected)
             self._mcg.load_playlist()
             self._mcg.load_albums()
+            self._mcg.get_custom(Window._CUSTOM_STARTUP_COMPLETE)
             self._mcg.get_status()
             self._mcg.get_stats()
             self._mcg.get_output_devices()