diff --git a/app/covid-calculator.ipynb b/app/covid-calculator.ipynb
index f353483b..f085184b 100644
--- a/app/covid-calculator.ipynb
+++ b/app/covid-calculator.ipynb
@@ -210,7 +210,7 @@
     "                                   w.HBox(children=(lunch_start_hour, lunch_start_minute))),\n",
     "                         layout=w.Layout(padding=\"0px 20px 0px 0px\"))\n",
     "lunch_finish_box = w.VBox(children=(w.Label(\"Finish:\"),\n",
-    "                                    w.HBox(children=(lunch_finish_minute, lunch_finish_minute))))\n",
+    "                                    w.HBox(children=(lunch_finish_hour, lunch_finish_minute))))\n",
     "lunch_time_box = w.HBox(children=(lunch_start_box, lunch_finish_box), layout=w.Layout(width='auto'))\n",
     "\n",
     "lunch_button = w.ToggleButton(value=False, description=\"Lunch break\")\n",