diff --git a/lsflib/tools/digest.c b/lsflib/tools/digest.c
--- a/lsflib/tools/digest.c
+++ b/lsflib/tools/digest.c
@@ -1,3 +1,8 @@
+/**
+ * lsflib/tools/digest.c
+ * Copyright (C) 2008 Markus Broeker
+ */
+
 #include <stdio.h>
 #include <stdlib.h>