diff --git a/src/main/java/pt/ieeta/dicoogle/plugin/demo/dicooglepluginsample/JsonWebService.java b/src/main/java/pt/ieeta/dicoogle/plugin/demo/dicooglepluginsample/JsonWebService.java
index a9998d7..82a3de7 100644
--- a/src/main/java/pt/ieeta/dicoogle/plugin/demo/dicooglepluginsample/JsonWebService.java
+++ b/src/main/java/pt/ieeta/dicoogle/plugin/demo/dicooglepluginsample/JsonWebService.java
@@ -1,3 +1,21 @@
+/**
+ * Copyright (C) 2014  Universidade de Aveiro, DETI/IEETA, Bioinformatics Group - http://bioinformatics.ua.pt/
+ *
+ * This file is part of Dicoogle/dicoogle-plugin-sample.
+ *
+ * Dicoogle/dicoogle-plugin-sample 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.
+ *
+ * Dicoogle/dicoogle-plugin-sample 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 Dicoogle.  If not, see <http://www.gnu.org/licenses/>.
+ */
 
 package pt.ieeta.dicoogle.plugin.demo.dicooglepluginsample;