diff --git a/ChangeLog b/ChangeLog
index 6f74a14769..176b24f9ad 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,7 +1,7 @@
 Mon Sep 30 10:40:20 2013  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* vm_method.c (rb_undef): raise a NameError if the original method
-	  of a refined method is not defined. 
+	  of a refined method is not defined.
 
 	* vm_insnhelper.c (rb_method_entry_eq): added NULL check to avoid SEGV.