diff --git a/electrum/plugins/payserver/qt.py b/electrum/plugins/payserver/qt.py
index 15ddab07c..48c65e03c 100644
--- a/electrum/plugins/payserver/qt.py
+++ b/electrum/plugins/payserver/qt.py
@@ -24,7 +24,9 @@
 # SOFTWARE.
 
 from functools import partial
+from typing import TYPE_CHECKING
 from PyQt5 import QtWidgets
+
 from electrum.i18n import _
 from electrum.plugin import hook
 from electrum.gui.qt.util import WindowModalDialog, OkButton, Buttons, EnterButton, webopen