diff --git a/ChangeLog b/ChangeLog
index 7a8011639d..976f7f911c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -254,8 +254,8 @@ Wed Sep  9 11:33:05 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
 Wed Sep  9 11:08:59 2015  Zachary Scott  <zzak@ruby-lang.org>
 
 	* lib/delegate.rb: Remove backtrace cleaning for delegated methods
-          This patch was provided by Rafael Franca and greatly improves
-          performance when an exception is raised. [Bug #11461]
+	  This patch was provided by Rafael Franca and greatly improves
+	  performance when an exception is raised. [Bug #11461]
 
 Wed Sep  9 10:05:41 2015  SHIBATA Hiroshi  <hsbt@ruby-lang.org>