diff --git a/skimage/filter/rank/generic.py b/skimage/filter/rank/generic.py
index 0bc8ca50..247701d5 100644
--- a/skimage/filter/rank/generic.py
+++ b/skimage/filter/rank/generic.py
@@ -677,7 +677,7 @@ def entropy(image, selem, out=None, mask=None, shift_x=False, shift_y=False):
 
     References
     ----------
-    .. [1] http://en.wikipedia.org/wiki/Entropy_(information_theory)
+    .. [1] http://en.wikipedia.org/wiki/Entropy_(information_theory)>
 
     Examples
     --------