diff --git a/docs/examples/notebooks/00_notebook_tour.ipynb b/docs/examples/notebooks/00_notebook_tour.ipynb
index dbe7c27..c3deb07 100644
--- a/docs/examples/notebooks/00_notebook_tour.ipynb
+++ b/docs/examples/notebooks/00_notebook_tour.ipynb
@@ -992,6 +992,7 @@
      "cell_type": "code",
      "collapsed": false,
      "input": [
+      "from IPython.display import HTML\n",
       "HTML('<iframe src=http://en.mobile.wikipedia.org/?useformat=mobile width=700 height=350></iframe>')"
      ],
      "language": "python",