diff --git a/ChangeLog b/ChangeLog
index fa0a9ba649..7de8a9701b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Feb 16 04:21:07 2013  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* ext/socket/extconf.rb: workaround for mswin/mingw build problem.
+	  sendmsg emulation in win32/win32.c is not enough.
+
 Sat Feb 16 00:19:20 2013  Tanaka Akira  <akr@fsij.org>
 
 	* ext/socket/extconf.rb: use all all tested available headers for
diff --git a/ext/socket/extconf.rb b/ext/socket/extconf.rb
index a4576c0c7f..bb7be28e0e 100644
--- a/ext/socket/extconf.rb
+++ b/ext/socket/extconf.rb
@@ -85,7 +85,7 @@ if (doug[] or
   doug[] or with_cppflags($CPPFLAGS + " -Dss_len=__ss_len", &doug)
 end
 
-have_struct_member('struct msghdr', 'msg_control', headers)
+have_struct_member('struct msghdr', 'msg_control', headers) unless $mswin or $mingw
 have_struct_member('struct msghdr', 'msg_accrights', headers)
 
 if have_func(test_func, headers)