diff --git a/test/manual-tcp.c b/test/manual-tcp.c
index 64691c9d..7012614d 100644
--- a/test/manual-tcp.c
+++ b/test/manual-tcp.c
@@ -1,4 +1,7 @@
 /*
+ * Copyright 2015 Ralf Habacker
+ * SPDX-License-Identifier: MIT
+ *
  * Simple manual tcp check
  *
  * supports: