diff --git a/include/boost/predef/hardware/simd/x86.h b/include/boost/predef/hardware/simd/x86.h
index b11d571..88bd81e 100644
--- a/include/boost/predef/hardware/simd/x86.h
+++ b/include/boost/predef/hardware/simd/x86.h
@@ -99,10 +99,10 @@ http://www.boost.org/LICENSE_1_0.txt)
 #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__)