diff --git a/IPython/core/formatters.py b/IPython/core/formatters.py
index 3c7b78c..be13192 100644
--- a/IPython/core/formatters.py
+++ b/IPython/core/formatters.py
@@ -32,6 +32,13 @@ a function.
 See the `IPython.external.pretty` documentation for how to write
 pretty-printer functions.
 """
+#-----------------------------------------------------------------------------
+# Copyright (c) 2010, IPython Development Team.
+#
+# Distributed under the terms of the Modified BSD License.
+#
+# The full license is in the file COPYING.txt, distributed with this software.
+#-----------------------------------------------------------------------------
 
 # Stdlib imports
 import abc