diff --git a/pytec/tec_qt.py b/pytec/tec_qt.py
index e0c3485..09d86d4 100755
--- a/pytec/tec_qt.py
+++ b/pytec/tec_qt.py
@@ -64,7 +64,15 @@ class MainWindow(QtWidgets.QMainWindow):
         self.info_box = InfoBox()
 
         self.client = WrappedClient(self)
-        self.client.connection_error.connect(self.bail)
+
+        def handle_connection_error():
+            self.info_box.display_info_box(
+                "Connection Error", "Thermostat connection lost. Is it unplugged?"
+            )
+
+            self.bail()
+
+        self.client.connection_error.connect(handle_connection_error)
 
         self.thermostat = Thermostat(
             self, self.client, self.report_refresh_spin.value()