diff --git a/corsika/detail/media/GeomagneticModel.inl b/corsika/detail/media/GeomagneticModel.inl
index bc15958777b75d3ebf2b415121595f543575e9f4..910792b7f46378b805fb1635f4dd100b0f15316d 100644
--- a/corsika/detail/media/GeomagneticModel.inl
+++ b/corsika/detail/media/GeomagneticModel.inl
@@ -1,3 +1,11 @@
+/*
+ * (c) Copyright 2021 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
 #include <corsika/framework/core/Logging.hpp>
 #include <corsika/framework/utility/CorsikaData.hpp>
 
diff --git a/corsika/media/GeomagneticModel.hpp b/corsika/media/GeomagneticModel.hpp
index 27a8f59c84d84b29fddb8a31b6f580ffe95404a4..0c3d7609649c21d29fc8fff26e6bd97c4f46a011 100644
--- a/corsika/media/GeomagneticModel.hpp
+++ b/corsika/media/GeomagneticModel.hpp
@@ -1,3 +1,11 @@
+/*
+ * (c) Copyright 2021 CORSIKA Project, corsika-project@lists.kit.edu
+ *
+ * This software is distributed under the terms of the GNU General Public
+ * Licence version 3 (GPL Version 3). See file LICENSE for a full version of
+ * the license.
+ */
+
 #pragma once
 
 #include <corsika/framework/core/PhysicalUnits.hpp>