diff --git a/include/boost/predef/platform/mingw.h b/include/boost/predef/platform/mingw.h
index 64c5837..5a1334b 100644
--- a/include/boost/predef/platform/mingw.h
+++ b/include/boost/predef/platform/mingw.h
@@ -5,8 +5,8 @@ Distributed under the Boost Software License, Version 1.0.
 http://www.boost.org/LICENSE_1_0.txt)
 */
 
-#ifndef BOOST_PREDEF_COMPILER_MINGW_H
-#define BOOST_PREDEF_COMPILER_MINGW_H
+#ifndef BOOST_PREDEF_PLAT_MINGW_H
+#define BOOST_PREDEF_PLAT_MINGW_H
 
 #include <boost/predef/version_number.h>
 #include <boost/predef/make.h>