diff --git a/AUTHORS b/AUTHORS
index 01cde401e..c988d40d2 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -11,5 +11,5 @@ Original Authors "mruby developers" are:
    Masaki Muranaka
    Internet Initiative Japan Inc.
    Tadashi FUKUZAWA
-   Ryosuke MATSUMOTO
+   MATSUMOTO Ryosuke
    Yasuhiro Matsumoto