diff --git a/include/boost/predef/architecture/sys370.h b/include/boost/predef/architecture/sys370.h
new file mode 100644
index 0000000000000000000000000000000000000000..cfd85dc803b802e68f6f0df78ca8c8623811b5c0
--- /dev/null
+++ b/include/boost/predef/architecture/sys370.h
@@ -0,0 +1,43 @@
+/*
+Copyright Rene Rivera 2008-2015
+Distributed under the Boost Software License, Version 1.0.
+(See accompanying file LICENSE_1_0.txt or copy at
+http://www.boost.org/LICENSE_1_0.txt)
+*/
+
+#ifndef BOOST_PREDEF_ARCHITECTURE_SYS370_H
+#define BOOST_PREDEF_ARCHITECTURE_SYS370_H
+
+#include <boost/predef/version_number.h>
+#include <boost/predef/make.h>
+
+/*`
+[heading `BOOST_ARCH_SYS370`]
+
+[@http://en.wikipedia.org/wiki/System/370 System/370] architecture.
+
+[table
+    [[__predef_symbol__] [__predef_version__]]
+
+    [[`__370__`] [__predef_detection__]]
+    [[`__THW_370__`] [__predef_detection__]]
+    ]
+ */
+
+#define BOOST_ARCH_SYS370 BOOST_VERSION_NUMBER_NOT_AVAILABLE
+
+#if defined(__370__) || defined(__THW_370__)
+#   undef BOOST_ARCH_SYS370
+#   define BOOST_ARCH_SYS370 BOOST_VERSION_NUMBER_AVAILABLE
+#endif
+
+#if BOOST_ARCH_SYS370
+#   define BOOST_ARCH_SYS370_AVAILABLE
+#endif
+
+#define BOOST_ARCH_SYS370_NAME "System/370"
+
+#endif
+
+#include <boost/predef/detail/test.h>
+BOOST_PREDEF_DECLARE_TEST(BOOST_ARCH_SYS370,BOOST_ARCH_SYS370_NAME)