diff --git a/ChangeLog b/ChangeLog
index 246874c8bb..517ad4089b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Tue Nov 27 09:59:16 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* ext/extmk.rb (extmake): close mkmf.log for each libraries so that
+	  failure messages are not mixed.
+
 Tue Nov 27 09:58:48 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ext/digest/*/extconf.rb, ext/openssl/extconf.rb: get git rid of
diff --git a/ext/extmk.rb b/ext/extmk.rb
index 084136ff02..4e5f64d4f6 100755
--- a/ext/extmk.rb
+++ b/ext/extmk.rb
@@ -201,6 +201,7 @@ def extmake(target)
             begin
               load $0 = conf
             ensure
+              Logging::log_close
               $stderr.reopen(stderr)
               $stdout.reopen(stdout)
               stdout.close