diff --git a/ChangeLog b/ChangeLog
index c9ddb12f8e..4744ce6e26 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18,7 +18,7 @@ Fri May 27 15:07:32 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 	  warnings by old clang.
 
 	* include/ruby/ruby.h (rb_scan_args0): make extractor macros
-	  inline functions, which do not varidate the format and are
+	  inline functions, which do not validate the format and are
 	  unnecessary to be expanded.
 
 Fri May 27 01:00:36 2016  NARUSE, Yui  <naruse@ruby-lang.org>