diff --git a/c/opendht.cpp b/c/opendht.cpp
index c2b312e6ed327883cc20936c9ed779c18397e2e2..6fa30ab663367db6c22d568bf844e122866be03b 100644
--- a/c/opendht.cpp
+++ b/c/opendht.cpp
@@ -1,3 +1,21 @@
+/*
+ *  Copyright (C) 2014-2021 Savoir-faire Linux Inc.
+ *  Author : Adrien Béraud <adrien.beraud@savoirfairelinux.com>
+ *
+ *  This program 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.
+ *
+ *  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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #include "opendht_c.h"
 #include "opendht.h"
 
diff --git a/c/opendht_c.h b/c/opendht_c.h
index 0c7d31e98f43be7e4b736d774c6c8ad02ef33870..10e1298a13a604d223f200bdd2657e1564e87a7b 100644
--- a/c/opendht_c.h
+++ b/c/opendht_c.h
@@ -1,3 +1,21 @@
+/*
+ *  Copyright (C) 2014-2021 Savoir-faire Linux Inc.
+ *  Author : Adrien Béraud <adrien.beraud@savoirfairelinux.com>
+ *
+ *  This program 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.
+ *
+ *  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 General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
 #pragma once
 
 #ifdef __cplusplus