diff --git a/gui/qt/main_window.py b/gui/qt/main_window.py
index a6ef4dabb..7158c75f1 100644
--- a/gui/qt/main_window.py
+++ b/gui/qt/main_window.py
@@ -76,6 +76,7 @@ from electrum import ELECTRUM_VERSION
 import re
 
 from util import MyTreeWidget, HelpButton, EnterButton, line_dialog, text_dialog, ok_cancel_buttons, close_button, WaitingDialog
+from util import filename_field, ok_cancel_buttons2
 
 
 def format_status(x):