diff --git a/src/platform-win32.cc b/src/platform-win32.cc
index 783fd6c465..115a6c946e 100644
--- a/src/platform-win32.cc
+++ b/src/platform-win32.cc
@@ -112,11 +112,16 @@ int strncpy_s(char* dest, size_t dest_size, const char* source, size_t count) {
 }
 
 
+#ifndef __MINGW64_VERSION_MAJOR
+
 inline void MemoryBarrier() {
   int barrier = 0;
   __asm__ __volatile__("xchgl %%eax,%0 ":"=r" (barrier));
 }
 
+#endif  // __MINGW64_VERSION_MAJOR
+
+
 #endif  // __MINGW32__
 
 // Generate a pseudo-random number in the range 0-2^31-1. Usually