diff --git a/doc/examples/plot_gabors_from_lena.py b/doc/examples/plot_gabors_from_lena.py
index 36872259..3cf575a9 100644
--- a/doc/examples/plot_gabors_from_lena.py
+++ b/doc/examples/plot_gabors_from_lena.py
@@ -32,10 +32,10 @@ is not rocket science.
 .. [4] http://en.wikipedia.org/wiki/K-means_clustering
 .. [5] http://en.wikipedia.org/wiki/Lateral_geniculate_nucleus
 .. [6] D. H. Hubel and T. N. Wiesel Receptive Fields of Single Neurones
-in the Cat's Striate Cortex J. Physiol. pp. 574-591 (148) 1959
+    in the Cat's Striate Cortex J. Physiol. pp. 574-591 (148) 1959
 .. [7] D. H. Hubel and T. N. Wiesel Receptive Fields, Binocular
-Interaction and Functional Architecture in the Cat's Visual Cortex J.
-Physiol. 160 pp.  106-154 1962
+    Interaction and Functional Architecture in the Cat's Visual Cortex J.
+    Physiol. 160 pp.  106-154 1962
 """
 
 import numpy as np