diff --git a/chatdialog.h b/chatdialog.h
index c282a90..b604b02 100644
--- a/chatdialog.h
+++ b/chatdialog.h
@@ -59,6 +59,7 @@
 private slots:
   void returnPressed();
   void buttonPressed();
+  void treeButtonPressed();
   void checkSetting();
   void settingUpdated(QString, QString, QString);
   void sendHello();