diff --git a/ChangeLog b/ChangeLog
index d48b8c813d..13140db22c 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Jul 27 13:24:11 2015  Koichi Sasada  <ko1@atdot.net>
+
+	* template/id.h.tmpl (ID2ATTRSET): remove an unused macro.
+
 Mon Jul 27 12:21:15 2015  NAKAMURA Usaku  <usa@ruby-lang.org>
 
 	* test/openssl/tset_ssl.rb: run tests on non-Unix platforms.
diff --git a/template/id.h.tmpl b/template/id.h.tmpl
index 92dbc47586..ff2cb6b771 100644
--- a/template/id.h.tmpl
+++ b/template/id.h.tmpl
@@ -54,8 +54,6 @@ enum ruby_id_types {
 #define ID_JUNK        RUBY_ID_JUNK
 #define ID_INTERNAL    RUBY_ID_INTERNAL
 
-#define ID2ATTRSET(id) (((id)&~ID_SCOPE_MASK)|ID_ATTRSET)
-
 #define symIFUNC ID2SYM(idIFUNC)
 #define symCFUNC ID2SYM(idCFUNC)