diff --git a/winsup/w32api/ChangeLog b/winsup/w32api/ChangeLog
index 5ddf67a74..d147f9eaf 100644
--- a/winsup/w32api/ChangeLog
+++ b/winsup/w32api/ChangeLog
@@ -1,3 +1,8 @@
+2012-08-06  Earnie Boyd  <earnie@users.sourceforge.net>
+
+	* include/winnt.h (MemoryBarrier): Use __sync_synchronize instead of
+	creating a function due to multiple definition.
+
 2012-08-04  Earnie Boyd  <earnie@users.sourceforge.net>
 
 	* include/winver.h (VerQueryValue[AW]): Correct declaration per MSDN.
diff --git a/winsup/w32api/include/winnt.h b/winsup/w32api/include/winnt.h
index 24ce2de35..c1c998c9b 100644
--- a/winsup/w32api/include/winnt.h
+++ b/winsup/w32api/include/winnt.h
@@ -4041,11 +4041,7 @@ struct _TEB * NtCurrentTeb(void);
 # elif defined(_IA64_)
 #  define MemoryBarrier __mf
 # else
-   FORCEINLINE VOID MemoryBarrier (VOID) {
-       LONG Barrier = 0;
-       __asm__ __volatile__("xchgl %%eax,%0 "
-         :"=r" (Barrier));
-   }
+#  define MemoryBarrier __sync_synchronize
 # endif
 #else
 # define MemoryBarrier