diff --git a/README.md b/README.md
index 28e2ffc71..ba45ccf61 100644
--- a/README.md
+++ b/README.md
@@ -113,4 +113,4 @@ Please ask us if you want to distribute your code under another license.
 See the [contribution guidelines](https://github.com/mruby/mruby/blob/master/CONTRIBUTING.md)
 then send a pull request to <http://github.com/mruby/mruby>.  We consider you have granted
 non-exclusive right to your contributed code under MIT license.  If you want to be named
-as one of mruby developers, include update to the AUTHORS file in your pull request.
+as one of mruby developers, please include an update to the AUTHORS file in your pull request.