diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index a90f145..034396d 100755
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -107,8 +107,8 @@ class MainWindow(QtWidgets.QMainWindow):
         )
 
         # Bottom bar menus
-        self._conn_menu = ConnMenu(self._thermostat, self.connect_btn)
-        self.connect_btn.setMenu(self._conn_menu)
+        self.conn_menu = ConnMenu(self._thermostat, self.connect_btn)
+        self.connect_btn.setMenu(self.conn_menu)
 
         self._thermostat_ctrl_menu = ThermostatCtrlMenu(
             self._thermostat, self._info_box, self.style()
@@ -189,8 +189,8 @@ class MainWindow(QtWidgets.QMainWindow):
             case ThermostatConnectionState.DISCONNECTED:
                 self._connecting_task = asyncio.create_task(
                     self._thermostat.start_session(
-                        host=self._conn_menu.host_set_line.text(),
-                        port=self._conn_menu.port_set_spin.value(),
+                        host=self.conn_menu.host_set_line.text(),
+                        port=self.conn_menu.port_set_spin.value(),
                     )
                 )
                 self._thermostat.connection_state = ThermostatConnectionState.CONNECTING
@@ -234,9 +234,9 @@ async def coro_main():
 
     if args.connect:
         if args.HOST:
-            main_window._conn_menu.host_set_line.setText(args.HOST)
+            main_window.conn_menu.host_set_line.setText(args.HOST)
         if args.PORT:
-            main_window._conn_menu.port_set_spin.setValue(int(args.PORT))
+            main_window.conn_menu.port_set_spin.setValue(int(args.PORT))
         main_window.connect_btn.click()
 
     await app_quit_event.wait()