diff --git a/README.rst b/README.rst
index d6516e08a48a6b20a614fc08cce782db2342e86b..c469de2b54363e492d703953092e552057f6279e 100644
--- a/README.rst
+++ b/README.rst
@@ -96,6 +96,11 @@ will be generated in ``htmlcov/``.
 Credits
 -------
 
+
 The `fsl.data.dicom <fsl/data/dicom/>`_ module is little more than a thin
 wrapper around Chris Rorden's `dcm2niix
 <https://github.com/rordenlab/dcm2niix>`_ program.
+
+
+The `example.mgz <tests/testdata/example.mgz>`_ file, used for testing,
+originates from the ``nibabel`` test data set.