diff --git a/include/mruby.h b/include/mruby.h
index 1336d34d8..cd92bf551 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -1,5 +1,5 @@
 /*
-** mruby - An embeddable Ruby implementaion
+** mruby - An embeddable Ruby implementation
 **
 ** Copyright (c) mruby developers 2010-2012
 **