diff --git a/xbyak/xbyak_util.h b/xbyak/xbyak_util.h
index 2508416..12c0068 100644
--- a/xbyak/xbyak_util.h
+++ b/xbyak/xbyak_util.h
@@ -306,7 +306,7 @@
 	static inline void getCpuidEx(uint32_t eaxIn, uint32_t ecxIn, uint32_t data[4])
 	{
 #ifdef XBYAK_INTEL_CPU_SPECIFIC
-	#ifdef _MSC_VER
+	#ifdef _WIN32
 		__cpuidex(reinterpret_cast<int*>(data), eaxIn, ecxIn);
 	#else
 		__cpuid_count(eaxIn, ecxIn, data[0], data[1], data[2], data[3]);