diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index 33395dd..9e81c39 100755
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -241,17 +241,16 @@ class MainWindow(QtWidgets.QMainWindow):
 
     @asyncSlot()
     async def on_connect_btn_clicked(self):
-        host, port = (
-            self.conn_menu.host_set_line.text(),
-            self.conn_menu.port_set_spin.value(),
-        )
-
         if (self._connecting_task is None) and (not self.thermostat.connected()):
             self.status_lbl.setText("Connecting...")
             self.connect_btn.setText("Stop")
             self.conn_menu.host_set_line.setEnabled(False)
             self.conn_menu.port_set_spin.setEnabled(False)
 
+            host, port = (
+                self.conn_menu.host_set_line.text(),
+                self.conn_menu.port_set_spin.value(),
+            )
             self._connecting_task = asyncio.create_task(
                 asyncio.wait_for(
                     self.thermostat.start_session(host=host, port=port), timeout=5