diff --git a/electrum/gui/qml/components/WalletMainView.qml b/electrum/gui/qml/components/WalletMainView.qml
index b594af707..88f5a1779 100644
--- a/electrum/gui/qml/components/WalletMainView.qml
+++ b/electrum/gui/qml/components/WalletMainView.qml
@@ -317,10 +317,6 @@ Item {
         function onOtpRequested() {
             console.log('OTP requested')
             var dialog = otpDialog.createObject(mainView)
-            dialog.accepted.connect(function() {
-                console.log('accepted ' + dialog.otpauth)
-                Daemon.currentWallet.finish_otp(dialog.otpauth)
-            })
             dialog.open()
         }
         function onBroadcastFailed(txid, code, message) {
diff --git a/electrum/plugins/trustedcoin/qt_common.py b/electrum/plugins/trustedcoin/qt_common.py
index d8186af30..d9f492051 100644
--- a/electrum/plugins/trustedcoin/qt_common.py
+++ b/electrum/plugins/trustedcoin/qt_common.py
@@ -222,6 +222,8 @@ class QSignalObject(PluginQObject):
 
     @pyqtSlot(str, int)
     def checkOtp(self, short_id, otp):
+        assert type(otp) is int  # make sure this doesn't fail subtly
+
         def check_otp_task():
             try:
                 self.plugin.logger.debug(f'check OTP, shortId={short_id}, otp={otp}')