diff --git a/CONTRIBUTORS.txt b/CONTRIBUTORS.txt
index 4abe9256..5f375c39 100644
--- a/CONTRIBUTORS.txt
+++ b/CONTRIBUTORS.txt
@@ -73,7 +73,7 @@
   From whom we borrowed the example generation tools.
 
 - Andreas Mueller
-  Example data set loader.
+  Example data set loader. Nosetest compatibility functions.
   Quickshift image segmentation, Felzenszwalbs fast graph based segmentation.
 
 - Yaroslav Halchenko
diff --git a/skimage/_shared/testing.py b/skimage/_shared/testing.py
index a5270125..eab83a56 100644
--- a/skimage/_shared/testing.py
+++ b/skimage/_shared/testing.py
@@ -1,7 +1,5 @@
 """Testing utilities."""
 
-# Copyright (c) 2011 Pietro Berkes
-# License: Simplified BSD
 
 def _assert_less(a, b, msg=None):
     message = "%r is not lower than %r" % (a, b)