diff --git a/ChangeLog b/ChangeLog
index 1dbdc416e1..59b2e43922 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Sep 29 10:59:16 2006  WATANABE Hirofumi  <eban@ruby-lang.org>
+
+	* lib/jcode.rb: need to initialize SUCC['n'].  
+	  fixed: [ruby-talk:216845]
+
 Fri Sep 29 09:56:56 2006  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/extmk.rb: extout is needed for also clean.
diff --git a/lib/jcode.rb b/lib/jcode.rb
index e5367e815b..8a938254bb 100644
--- a/lib/jcode.rb
+++ b/lib/jcode.rb
@@ -24,6 +24,7 @@ class String
   RE_UTF8 = Regexp.new(PATTERN_UTF8, 0, 'n')
 
   SUCC = {}
+  SUCC['n'] = Hash.new(1)
   SUCC['s'] = Hash.new(1)
   for i in 0 .. 0x3f
     SUCC['s'][i.chr] = 0x40 - i