diff --git a/notebooks/02.Widget_overview/03.WidgetList/03.00-widget-list.ipynb b/notebooks/02.Widget_overview/03.WidgetList/03.00-widget-list.ipynb
index 0a4f55e1..f9140f89 100644
--- a/notebooks/02.Widget_overview/03.WidgetList/03.00-widget-list.ipynb
+++ b/notebooks/02.Widget_overview/03.WidgetList/03.00-widget-list.ipynb
@@ -45,7 +45,7 @@
    "outputs": [],
    "source": [
     "groups = organized_widgets(organize_by='ui')\n",
-    "help_url_base='../reference_guides/complete-ipywidgets-widget-list.ipynb'\n",
+    "help_url_base='../../reference_guides/complete-ipywidgets-widget-list.ipynb'\n",
     "list_overview_widget(groups, columns=2, min_width_single_widget=200, help_url_base=help_url_base)"
    ]
   },