diff --git a/ndn/experiments/pingall_experiment.py b/ndn/experiments/pingall_experiment.py
index 28ad27f..76f0ef6 100644
--- a/ndn/experiments/pingall_experiment.py
+++ b/ndn/experiments/pingall_experiment.py
@@ -1,4 +1,25 @@
-#!/usr/bin/python
+# -*- Mode:python; c-file-style:"gnu"; indent-tabs-mode:nil -*- */
+#
+# Copyright (C) 2015 The University of Memphis,
+#                    Arizona Board of Regents,
+#                    Regents of the University of California.
+#
+# This file is part of Mini-NDN.
+# See AUTHORS.md for a complete list of Mini-NDN authors and contributors.
+#
+# Mini-NDN is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Mini-NDN is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Mini-NDN, e.g., in COPYING.md file.
+# If not, see <http://www.gnu.org/licenses/>.
 
 from ndn.experiments.experiment import Experiment