diff --git a/uppsrc/Core/Core.h b/uppsrc/Core/Core.h
index 2820b68ef..c2d1e38dc 100644
--- a/uppsrc/Core/Core.h
+++ b/uppsrc/Core/Core.h
@@ -350,10 +350,6 @@ class JsonIO;
 
 #include "Huge.h"
 
-#ifdef CPU_X86
-#include <xmmintrin.h>
-#endif
-
 #ifdef PLATFORM_WIN32
 NTL_MOVEABLE(POINT)
 NTL_MOVEABLE(SIZE)
diff --git a/uppsrc/Core/Mt.cpp b/uppsrc/Core/Mt.cpp
index 6760cfae9..820ae00b6 100644
--- a/uppsrc/Core/Mt.cpp
+++ b/uppsrc/Core/Mt.cpp
@@ -627,6 +627,10 @@ LazyUpdate::LazyUpdate()
 	dirty = true;
 }
 
+#ifdef CPU_X86
+#include <xmmintrin.h>
+#endif
+
 void SpinLock::Wait()
 {
 	volatile int n = 0;