diff --git a/invoke.hpp b/invoke.hpp
index 1224e7b..4df38aa 100644
--- a/invoke.hpp
+++ b/invoke.hpp
@@ -1,3 +1,9 @@
+/*******************************************************************************
+ * This file is part of the "invoke.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2018 Matvey Cherevko
+ ******************************************************************************/
+
 #pragma once
 
 #include <tuple>
diff --git a/tests.cpp b/tests.cpp
index 72d4e13..69270fb 100644
--- a/tests.cpp
+++ b/tests.cpp
@@ -1,3 +1,9 @@
+/*******************************************************************************
+ * This file is part of the "invoke.hpp"
+ * For conditions of distribution and use, see copyright notice in LICENSE.md
+ * Copyright (C) 2018 Matvey Cherevko
+ ******************************************************************************/
+
 #define CATCH_CONFIG_MAIN
 #include "catch.hpp"