diff --git a/src/main/java/io/kamax/mxisd/matrix/IdentityServerUtils.java b/src/main/java/io/kamax/mxisd/matrix/IdentityServerUtils.java
index dbf3705..2e399dd 100644
--- a/src/main/java/io/kamax/mxisd/matrix/IdentityServerUtils.java
+++ b/src/main/java/io/kamax/mxisd/matrix/IdentityServerUtils.java
@@ -1,3 +1,23 @@
+/*
+ * mxisd - Matrix Identity Server Daemon
+ * Copyright (C) 2017 Kamax Sarl
+ *
+ * https://www.kamax.io/
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
 package io.kamax.mxisd.matrix;
 
 import com.google.gson.JsonElement;