diff --git a/m-serial-bin.h b/m-serial-bin.h
index 06a2a8e4..ac38664b 100644
--- a/m-serial-bin.h
+++ b/m-serial-bin.h
@@ -1,4 +1,6 @@
 /*
+ * M*LIB - Serial BIN
+ *
  * Copyright (c) 2017-2019, Patrick Pelissier
  * All rights reserved.
  * Redistribution and use in source and binary forms, with or without
diff --git a/m-serial-json.h b/m-serial-json.h
index e423d8db..0d5cb081 100644
--- a/m-serial-json.h
+++ b/m-serial-json.h
@@ -1,4 +1,6 @@
 /*
+ * M*LIB - Serial JSON
+ *
  * Copyright (c) 2017-2019, Patrick Pelissier
  * All rights reserved.
  * Redistribution and use in source and binary forms, with or without
diff --git a/m-tuple.h b/m-tuple.h
index 4e2b1e43..f2355fc0 100644
--- a/m-tuple.h
+++ b/m-tuple.h
@@ -1,4 +1,6 @@
 /*
+ * M*LIB - TUPLE module
+ *
  * Copyright (c) 2017-2019, Patrick Pelissier
  * All rights reserved.
  * Redistribution and use in source and binary forms, with or without