diff --git a/src/xheartbeat_client.cpp b/src/xheartbeat_client.cpp
new file mode 100644
index 0000000..87331cb
--- /dev/null
+++ b/src/xheartbeat_client.cpp
@@ -0,0 +1,8 @@
+/***************************************************************************
+* Copyright (c) 2016, Johan Mabille, Sylvain Corlay, Martin Renou          *
+* Copyright (c) 2016, QuantStack                                           *
+*                                                                          *
+* Distributed under the terms of the BSD 3-Clause License.                 *
+*                                                                          *
+* The full license is in the file LICENSE, distributed with this software. *
+****************************************************************************/
\ No newline at end of file
diff --git a/src/xheartbeat_client.hpp b/src/xheartbeat_client.hpp
new file mode 100644
index 0000000..87331cb
--- /dev/null
+++ b/src/xheartbeat_client.hpp
@@ -0,0 +1,8 @@
+/***************************************************************************
+* Copyright (c) 2016, Johan Mabille, Sylvain Corlay, Martin Renou          *
+* Copyright (c) 2016, QuantStack                                           *
+*                                                                          *
+* Distributed under the terms of the BSD 3-Clause License.                 *
+*                                                                          *
+* The full license is in the file LICENSE, distributed with this software. *
+****************************************************************************/
\ No newline at end of file