diff -ru boost.orig/boost/predef/hardware/simd/x86.h boost/boost/predef/hardware/simd/x86.h
--- a/b/boost.orig/boost/predef/hardware/simd/x86.h	2016-01-30 15:58:27.931804135 +0100
+++ a/b/boost/boost/predef/hardware/simd/x86.h	2016-01-30 16:02:09.063801650 +0100
@@ -99,10 +99,10 @@
 #if !defined(BOOST_HW_SIMD_X86) && defined(__SSE3__)
 #   define BOOST_HW_SIMD_X86 BOOST_HW_SIMD_X86_SSE3_VERSION
 #endif
-#if !defined(BOOST_HW_SIMD_X86) && (defined(__SSE2__) || defined(_M_X64) || _M_IX86_FP >= 2)
+#if !defined(BOOST_HW_SIMD_X86) && (defined(__SSE2__) || defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 2))
 #   define BOOST_HW_SIMD_X86 BOOST_HW_SIMD_X86_SSE2_VERSION
 #endif
-#if !defined(BOOST_HW_SIMD_X86) && (defined(__SSE__) || defined(_M_X64) || _M_IX86_FP >= 1)
+#if !defined(BOOST_HW_SIMD_X86) && (defined(__SSE__) || defined(_M_X64) || (defined(_M_IX86_FP) && _M_IX86_FP >= 1))
 #   define BOOST_HW_SIMD_X86 BOOST_HW_SIMD_X86_SSE_VERSION
 #endif
 #if !defined(BOOST_HW_SIMD_X86) && defined(__MMX__)