diff --git a/zipline/utils/calendars/exchange_calendar_bmf.py b/zipline/utils/calendars/exchange_calendar_bmf.py
index 2364b75e..74585453 100644
--- a/zipline/utils/calendars/exchange_calendar_bmf.py
+++ b/zipline/utils/calendars/exchange_calendar_bmf.py
@@ -1,3 +1,18 @@
+#
+# Copyright 2016 Quantopian, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 from datetime import time
 from pandas.tseries.holiday import(
     Holiday,
diff --git a/zipline/utils/calendars/exchange_calendar_lse.py b/zipline/utils/calendars/exchange_calendar_lse.py
index ca044917..cac6dc57 100644
--- a/zipline/utils/calendars/exchange_calendar_lse.py
+++ b/zipline/utils/calendars/exchange_calendar_lse.py
@@ -1,3 +1,18 @@
+#
+# Copyright 2016 Quantopian, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 from datetime import time
 from pandas.tseries.holiday import(
     Holiday,