diff --git a/mingw-w64-crt/stdio/vsnwprintf.c b/mingw-w64-crt/stdio/vsnwprintf.c
index d24a35e..f61e9e5 100755
--- a/mingw-w64-crt/stdio/vsnwprintf.c
+++ b/mingw-w64-crt/stdio/vsnwprintf.c
@@ -1,3 +1,8 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within this package.
+ */
 #include <_mingw.h>
 #include <stdarg.h>
 #include <wchar.h>