diff --git a/electrum/gui/qml/qewallet.py b/electrum/gui/qml/qewallet.py
index 792a536a4..fd3aee41f 100644
--- a/electrum/gui/qml/qewallet.py
+++ b/electrum/gui/qml/qewallet.py
@@ -485,7 +485,7 @@ class QEWallet(AuthMixin, QObject, QtEventListener):
         self.isLightningChanged.emit()
         self.dataChanged.emit()
 
-    @auth_protect
+    @auth_protect()
     def sign(self, tx, *, broadcast: bool = False):
         sign_hook = run_hook('tc_sign_wrapper', self.wallet, tx, partial(self.on_sign_complete, broadcast),
                              self.on_sign_failed)