diff --git a/doc/datasets/olivetti_faces.rst b/doc/datasets/olivetti_faces.rst
index 189e6f363c265bf1582b017757f664cf58926bd5..e702b91d857dd5893369ce996710cd3f76d3a55c 100644
--- a/doc/datasets/olivetti_faces.rst
+++ b/doc/datasets/olivetti_faces.rst
@@ -8,7 +8,9 @@ The Olivetti faces dataset
 This dataset contains a set of face images taken between April 1992 and April
 1994 at AT&T Laboratories Cambridge. The website describing the original
 dataset is now defunct, but archived copies can be accessed through
-`the Internet Archive's Wayback Machine`_.
+`the Internet Archive's Wayback Machine`_. The `sklearn.datasets.fetch_olivetti_faces`
+function is the data fetching / caching function that downloads the data
+archive from AT&T.
 
 .. _the Internet Archive's Wayback Machine: http://wayback.archive.org/web/*/http://www.uk.research.att.com/facedatabase.html