diff --git a/src/dsp/cpu.c b/src/dsp/cpu.c
index 086da836..8754f874 100644
--- a/src/dsp/cpu.c
+++ b/src/dsp/cpu.c
@@ -57,7 +57,7 @@ static WEBP_INLINE uint64_t xgetbv(void) {
 }
 #elif defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 160040219  // >= VS2010 SP1
 #define xgetbv() _xgetbv(0)
-#elif defined(_M_IX86)
+#elif defined(_MSC_VER) && defined(_M_IX86)
 static WEBP_INLINE uint64_t xgetbv(void) {
   uint32_t eax_, edx_;
   __asm {