diff --git a/ChangeLog b/ChangeLog
index ed69ad9d11..6f34bb9a81 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Dec 30 08:57:39 2014  SHIBATA Hiroshi  <shibata.hiroshi@gmail.com>
+
+	* lib/unicode_normalize.rb: typo fix. [ci skip]
+	  [ruby-dev:48794][misc #10675]
+
 Mon Dec 29 19:38:01 2014  Yukihiro Matsumoto  <matz@ruby-lang.org>
 
         * version.h (RUBY_VERSION): 2.3.0 development has started.
diff --git a/lib/unicode_normalize.rb b/lib/unicode_normalize.rb
index 3b07a47f33..e79f41d1a2 100644
--- a/lib/unicode_normalize.rb
+++ b/lib/unicode_normalize.rb
@@ -39,7 +39,7 @@ class String
   end
 
   # :call-seq:
-  #    str.unicode_normalize(form=:nfc)
+  #    str.unicode_normalize!(form=:nfc)
   #
   # Destructive version of String#unicode_normalize, doing Unicode
   # normalization in place.