diff --git a/DEPENDS.txt b/DEPENDS.txt
index 38d394b0..c7afcfda 100644
--- a/DEPENDS.txt
+++ b/DEPENDS.txt
@@ -17,6 +17,9 @@ functionality is only available with the following installed:
 `Open CV <http://opencv.willowgarage.com/wiki/>`_ (version 2.1). 
    Required for functions in ``scikits.image.opencv``.
 
+   Note that, under Ubuntu, due to problems with Atlas + OpenCV,
+   you may have to rebuild your own libcv.
+
 `PyQt4 <http://wiki.python.org/moin/PyQt>`_
    The `qt` plugin that provides `imshow` and `scivy`.