diff --git a/ChangeLog b/ChangeLog
index 2807f26887..8b99236d9c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,7 @@
 Sat Jul 30 11:21:55 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>
 
 	* vm_core.h (ALT_STACK_SIZE): use MINSIGSTKSZ*2 instead of SIGSTKSZ*2.
+	  [ruby-core:38607]
 
 Sat Jul 30 10:39:14 2011  KOSAKI Motohiro  <kosaki.motohiro@gmail.com>