diff --git a/ChangeLog b/ChangeLog
index 392c8bfaa8..1cdce5b2cb 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -3,11 +3,6 @@ Mon Sep  7 22:05:28 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 	* win32/win32.c (insert): should use plain strdup() instead of
 	  ruby_strdup() at startup time, and plain free()ed in cmdglob().
 
-Mon Sep  7 16:50:07 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
-
-	* vm_core.h (rb_vm_struct): define objspace always regardless
-	  ENABLE_VM_OBJSPACE.
-
 Mon Sep  7 16:49:30 2015  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm_core.h (rb_vm_struct): define objspace always regardless