diff --git a/src/vbisect.erl b/src/vbisect.erl
index 8e1735f..8e2e0d8 100644
--- a/src/vbisect.erl
+++ b/src/vbisect.erl
@@ -1,3 +1,23 @@
+%% ----------------------------------------------------------------------------
+%%
+%% hanoidb: LSM-trees (Log-Structured Merge Trees) Indexed Storage
+%%
+%% Copyright 2014 (c) Trifork A/S.  All Rights Reserved.
+%% http://trifork.com/ info@trifork.com
+%%
+%% This file is provided to you 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.
+%%
+%% ----------------------------------------------------------------------------
 
 
 -module(vbisect).