diff --git a/cmd/revert_cmd.go b/cmd/revert_cmd.go
index 82db5d1c4c..e7ede7cdef 100644
--- a/cmd/revert_cmd.go
+++ b/cmd/revert_cmd.go
@@ -1,3 +1,20 @@
+/*
+ * Copyright (C) 2018 The ontology Authors
+ * This file is part of The ontology library.
+ *
+ * The ontology is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * The ontology 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 Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with The ontology.  If not, see <http://www.gnu.org/licenses/>.
+ */
 package cmd
 
 import (