diff --git a/ChangeLog b/ChangeLog
index e98bc7bde0..e852ee6a99 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Fri Dec 28 15:15:12 2007  Akinori MUSHA  <knu@iDaemons.org>
+
+	* lib/irb/completion.rb: Remove garbage ("X=1").
+
 Fri Dec 28 15:12:05 2007  Eric Hodel  <drbrain@segment7.net>
 
 	* lib/rdoc, test/rdoc: Move RDoc tests out of lib/.
diff --git a/lib/irb/completion.rb b/lib/irb/completion.rb
index 501f96c70a..a029379371 100644
--- a/lib/irb/completion.rb
+++ b/lib/irb/completion.rb
@@ -9,8 +9,6 @@
 
 require "readline"
 
-X=1
-
 module IRB
   module InputCompletor