diff --git a/neo/idlib/sys/sys_intrinsics.h b/neo/idlib/sys/sys_intrinsics.h
index eab03980..975b1314 100644
--- a/neo/idlib/sys/sys_intrinsics.h
+++ b/neo/idlib/sys/sys_intrinsics.h
@@ -29,6 +29,12 @@ If you have questions concerning this license or the applicable additional terms
 #ifndef __SYS_INTRIINSICS_H__
 #define __SYS_INTRIINSICS_H__
 
+#if !defined(USE_INTRINSICS)
+#if defined(WIN32) || defined(__i386__) || defined(__x86_64__)
+#define USE_INTRINSICS
+#endif
+#endif
+
 #if defined(USE_INTRINSICS)
 #include <emmintrin.h>
 #endif